Europe Goes To Venus; Mars Comes to Us 172
JamesO writes "The BBC says that the ESA is going to Venus, reusing the Mars Express design.
Also here. Launch seems to be expected in 2005." And knownsense writes "Space.com is reporting that Mars is coming to closer to Earth. It will be closer by around 191 million miles and will end up 85 times brighter about August next year. This apparently is the first time it's been this close since the Neanderthals."
Metrics (Score:5, Funny)
ps. 1 mile = 1.6 km
Re:Metrics (Score:3, Insightful)
Re:Metrics (Score:1)
Re:Metrics (Score:2)
Good:
km. kg. Nm. kW. degree K.
Bad:
miles. pounds. lb/ft. horsepower. degree F.
Re:Metrics (Score:1)
But true anyway, metrics makes more sense, might be because I grown up with it though
Re:Metrics (Score:2)
SI units all based on 7 fundamental unit (IIRC).
Formula make exact physical sense without redundant conversion steps or constants that come from nowhere.
Re:Metrics (Score:2, Interesting)
#1. Dumb, old, lame joke. +4 Funny?? don't waste my time. The signal to noise ratio around here is pitiful of late. why, back in my day, +5 funny was lethal and used against the germans (but with great care of course)..
(nod to our german friends: the US is now run by an autocratic and jingoistic cabal, playing off the peoples' fears and emotions to promote their agenda of world domination. We even have an office of Fatherland Security. how times change.. go figure. )
#2. ESA not NASA. The stupid joke doesn't even apply. Pay attention!
ps. 1 mile = 1.609344 km. You just went splat.
pps. It was really a engineers vs. scientists breakdown. Most engineers of the older generation still work in imperial units. The spacecraft was built by engineers at Lockhead Martin (or the like). It was run by Scientists at NASA, who by in large use metric for everything. Culture clash played a large role in a really dumb mistake. (I'd like to see you write a bugless program that has to work flawlessly the first time it is trialed in a real situation. )
Conclusion: The metric system is unpatriotic.
Damn the french! They've been planning for dominance on Mars for centuries!
Criticism Part II: The slashdot story:
This reads like a perscription drug ad. 85 times brighter than what?? 191 million miles closer to where? Considering the Earth is about 92.5 million miles from the sun on average, and Mars is about 140 million miles out from the sun, and a mars year is approx 2 earth years, what's the big deal here?? We pass by close to Mars every 1.75 earth years or so.
I guess I should stop posting RTFA.
Re:Metrics (Score:1)
Re:Metrics (Score:2)
Faked Venus Landings? (Score:5, Funny)
Re:Faked Venus Landings? (Score:3, Funny)
All the footage from the Venera "spacecraft," on the other hand, was filmed outside Novosibirsk.
how will this affect me? (Score:5, Insightful)
Also, now that Life may exist on venus [216.239.39.100], will this lead to more interest in the oft' forgotten planet?
Re:how will this affect me? (Score:2, Interesting)
Screw all that "outside" nonsense, get all the mars you want right here [usgs.gov], straight from the Mars Orbital Camera. Note, requires a special program [usgs.gov] to view the files, but it's free.
Re:how will this affect me? (Score:1)
Well, I don't know about you, but I am certainly getting off my arse (or ass, if you prefer) and getting out to Ceduna [ceduna.net] for the total solar eclipse in december.
Admittedly, this is fairly easy due to living only about 8 hours away (This is Australia, 8 hours isn't considered very far)
I'm fairly certain It would help to be outside to see the sun, although being inside would certainly stop me going blind!
Very Welcome News... (Score:3, Interesting)
Just the other day I was talking to a friend about why there is so much more interest in Mars than there is in Venus. There are plenty of difficult questions that more missions to Venus could answer.
I'm very interested in what the results of this mission well be, there is after all so much to learn.
Of course, we need an obligatory Simpsons quote here:
"mmmmmmm..... gummie Venus"
Re:Very Welcome News... (Score:5, Insightful)
We can see the surface of Mars pretty well, probes that we send to the surface Mars will survive for more then a few hours, and it's possible that humans may go to Mars in the next 20 years.
With Venus, sure she's pretty, but she'll turn you into a cinder really quickly.
Re:Very Welcome News... (Score:3, Interesting)
Sounds like someone I know.
But seriously, this is why it is worth doing! Nothing ever got done by taking the easy way out! While I'm all for the Mars trip, and it probably should be first, I think we must go to Venus, because there is much there to learn, and because it is hard. The moon was hard once, and we did it. We can do it again!
I know we won't get there soon, but I want to see us accomplish this by the time I die.
The thing with Mars is that we know how to do it: We make a big enough ship with enough fuel to get there and back (Which we can do, it'd just be a lot). You put some hydroponics on board. It's tech we have.
Venus would require the same, and a lot more to stay alive there. It's truly a new frontier; Mars is merely a barren one. There is something romantic about Mars, but Venus' environment will fight tooth and nail to keep us away from her.
I don't know about you guys, but that makes me wonder that much more what color her panties are.
Oh really? (Score:3, Funny)
Tour Mars (Score:2)
But Mars -- we can send cute little rovers to Mars, and it's that cool color.
Re:Very Welcome News... (Score:2, Funny)
Holst anyone? (Score:5, Funny)
appear more than six times larger and shine some 85 times brighter than it appears now...
Does that mean we can play Holst's "The Planets" 6 times louder and have a valid reason for when the neighbours complain?
Re:Holst anyone? (Score:1)
Re:Holst anyone? (Score:2, Funny)
Neanderthals! (Score:2)
On a side note, whoever put the monolith up on the grassy knoll in Seattle on new years' 2001 has a priceless sense of humor. And they say Americans are no fun...
Then why... (Score:5, Insightful)
Why indeed... (Score:5, Funny)
[joke]
Well it must be because NASA [slashdot.org] are waiting for the current schlock of Hollywood movies to wrap, so they can hire some of the biggest sound stages ;)
[/joke]
Re:Then why... (Score:1)
Not much point right now... (Score:5, Interesting)
What would humans do in orbit around Venus that can't be done from a remote station here on earth?
"Hello Mission Control, the Venesian atmosphere is cloudy, and I cannot see a thing. I am about to launch the Venus probe with it's IR/UV/Radio-scannerthingamagig. BTW, I am still stuck in this tin can. I haven't experienced gravity in over a year, and my bones are disintigrating. The air is stale, the food is boring and I am about to go crazy."
Before you even start thinking about sending someone to another planet, there's a zillion other things to think about first. How to build a ship, how to feed the crew, what are the long term effects of space travel, etc. We still have a ways to go. A Satellite could go there now.
Remove satellites can do it far cheaper then a manned mission. If we're going to send humans anywhere, let send them someplace where they could acually walk.
But... (Score:1)
While I agree that there are perhaps better ways to collect aggregate data that we don't now have, the drill seems to be the same...propose fancy manned mission off-planet and request huge budget.
Seems to leave room for other countries to eat their Galileon lunch, eh?
Re:Not much point right now... (Score:3, Insightful)
Re:Then why... (Score:3, Informative)
Re: (Score:1)
Two things... (Score:5, Insightful)
Second, NASA doesn't set the priorities for what it does. It doesn't have much flexibility in how it uses its budget. Its missions and expenditures are determined by Congress in each year's budget. I assure you that there are many people inside NASA who are chomping at the bit to break humans out of Earth orbit (including many very high-ranking people inside the agency). But, Congress has to unleash NASA, and fund any mandate it approves.
I'm with you, though, man. I want Americans to have the capability to go whereever the hell we want in the Solar System.
Re:Two things... (Score:2)
I think the US government's priorities are currently a bit different than that. First we gotta go to Iraq. Then there are all those other countries that just won't follow orders.
Once we get them all in line, maybe we'll think about conquering the rest of the Solar System.
OTOH, maybe if we could convince Dubya that we were threatened by Mars or Callistans or Titanians or whatever, he'd have troops on the way as soon as Congress rubber-stamped his request for conquest.
orbital mechanics (Score:2, Interesting)
If we're so close, then wouldn't this be an opertune time to take the next step in human exploration of space
Actually, orbital mechanics are a bit more complicated than just being 'close'. Going to mars is not a straight-line shot, as it might seem. It involves more of a elliptical shape originating at the earth. Remeber, when you want to go to mars, you have to aim at where the planet will be in 18 months when you get there, not aim at where it is when you leave. If your in a moving car with a pumpkin and happen to be coming upon your ex's mailbox, do you throw the pumpkin at where the mailbox is when you release it, or where the mailbox will be when the pumpkin gets there.
No, Im not a professor or anything, and no I have no links to prove my point, and Im sure a little googling would turn up a better answer, with some pretty pics too. Maybe I just watched Mechanical Universe too much as a child
-SiliconFoolRe:Reverse Recursion? (Score:2)
I believe our reluctance to go to Mars is proof of NASA being filled with geeks. I mean, when was it last that a self-respecting geek stepped out of his geekroom [slashdot.org]?
Re:Then why... (Score:2)
i've pretty much given up on sending manned spacecraft to mars/titan/whatever in next 20 years.
luckily my life expectance goes 30y+ years.
Close is bad (Score:3, Insightful)
Either way, an extra-close approach of Mars wouldn't cut very much time off the trip.
They've become so addicted to safe, academic research in orbit or from afar that they've forgotten how to take that leap into the unknown which was (in my opinion) what made the early space program (Murcury, Gemini, and Apollo) truly great.
Although I agree that NASA isn't what it used to be, I think you're missing the most important difference between 1960s' NASA and today's NASA: funding with blank checks.
Re:Then why... (Score:1)
Well, I guess they really could, I mean do Astronaughts really need suits, seat belts, and for that matter seats, food, happy O-ring seals, etc? They could always get off a mission to Mars Rocket Man style!
-Runz
"85 times brighter"? (Score:5, Funny)
"Auggh, my eyes! Damn you, Mars, damn you right to hell!"
Re:"85 times brighter"? (Score:1)
Re:"85 times brighter"? (Score:5, Informative)
Not really. Astronomical brightness measurements are logarithmic, and they have to be in order for us to notice any difference. A small bright point in the sky that's twice as bright as another one.. the human brain/eyes sees them both the same brightness (for the most part).
To really notice a difference, you need something on the range of 10X (or more) brighter. 85X from its usual appearance isn't THAT different, it'll just make Mars (normally a small red dot) look a bit brighter than Jupiter (a slightly larger red dot). If you've never watched Mars over the seasons, you may not be aware that it does this every coupla years, just not to this extent - the last time it got really bright was in the mid 80's - when Mars was almost as close (to within 2 million miles) as it will be this time around.
It's happened before, it's been measured, and yes, it really DOES get a lot brighter.
Re:"85 times brighter"? (Score:5, Informative)
Most people think "an order of magnitude" is a factor of 10. This is actually wrong, and I think it is the origin of your mistake. An order of magnitude is the old naked eye astronomer estimate of the just reliably distinguishable difference in brightness of two stars. A real astronomical order of magnitude is actually the FIFTH ROOT OF 100, which is a factor of almost exactly 2.5.
If objects differ in brightness by a factor of 2, you can easily tell which is the brightest if you can see them both together.
The factors influencing the brightness of Mars are:
Re:"85 times brighter"? (Score:3, Informative)
Well, that's reasonable to say that the astronomical "order of magnitude" = 2.5.
But the reason most people think "order of magnitude" is x10 is because that's the basic definition of "order of magnitude".
http://whatis.techtarget.com/definition/0,,sid9
Re:"85 times brighter"? (Score:1)
Spoilsports.
Re:"85 times brighter"? (Score:5, Informative)
You can compare the solar system diagrams:
today [heavens-above.com]
08/27/2003 [heavens-above.com]
NEATO (Score:3, Informative)
Re:NEATO (Score:2)
The NASA site has some excellent images, and individual project pages for people like me who need brushing up.
"Neat-o."
mama mia... (Score:2, Funny)
cool, a spacecraft with a fiat engine!
seriously though, this article seems biased... why is focus on italy; e.g., quote "the italian problem"? doesn't that kind of thing (one nation not contributing as much as everyone else) happen all the time?
Re:mama mia... (Score:2)
Actually, I don't care if they use Fiat or Vespa, as long as they don't use their legendary charm and steal Venus... oh wait, Michelangelo [bronzeart.com] already beat us to it.
But to answer your question, yes this thing of one team member not contributing as much as everyone else happens in all teams, whether they're intra-company, inter-state or international.
In fact, this phenomenon is so common that the equivalent "good guy" response, complaining about non-working team-mates, is also equally common.
Re:mama mia... (Score:1)
Correction (Score:4, Funny)
Seriously, though, I hope NASA and ESA and the Chinese and private firms have planned well in advance to take advantage of this situation.
Coincidences and coincidences (Score:3, Funny)
Coincidence? I don't think so!
-----
Paid for by "The Committee to Elect Edward D Wood Jr, Posthumously"
The Neanderthals (Score:5, Funny)
Yeah, and look what happened to them!
Re:The Neanderthals (Score:2, Funny)
Ooops -- that was a bit of a give away, quick agggrocck damage contol.
Re:The Neanderthals (Score:1)
um - dick in *his* pants (Score:1)
Re:um - dick in *his* pants (Score:1)
What is the relevance? (Score:1)
As long as it's not illegal (and/or nepotism and/or misuse of public funds), what is the problem?
I just don't get it.
not all that rare, really (Score:2)
Now I know the 2 million miles is still a huge distance when you think about it, but that's barely a 6% difference. All the numbers about the planet being 6 times larger or 85 times brighter, when you get down to it, won't be perceptible by the average joe unless he's shown two pictures pointing out the difference.
Unless mars starts to compete with the moon for being the brightest object in the sky, who really cares beyond some numbers geek being impressed at winning a celestial lottery?
Re:not all that rare, really (Score:2)
Celestial lottery -- well, when is the next syzygy? Rare enough for ya?
Speaking of timing, the Voyager probes were launched as a time particularly suitable for a "Grand Tour" of the solar system. Really remarkable, the way they used gravitational slingshots and careful alignment to visit all the gas giants with a small amount of fuel. I can imagine the calculations for getting to the Moon and back, but interplanetary probes -- wow.
Re:not all that rare, really (Score:5, Informative)
Agreed. This is mostly a "numerical anomally" rather than something that is visually signficant. Close approaches happen about every 15 years or so, and most of these are probably within a few percent points of this coming distance.
Although, it would be cool to come out side one night and see Mars close enough to find the missing Polar Lander with the naked eye
Mars is often a tough telescope target. Your eye has to be trained to see any significant detail on the disk. Otherwise it will just look like a small orange disk, roughly the size of a penny held at arms length through the scope, with maybe one or two dark but vague splotches and maybe light areas that mark one or both poles or some high clouds. A "slightly dirty pencil eraser edge on" is how I would describe the view.
I was disappointed to see it at the city observatory at the last close approach. My little 60mm scope actually showed more detail (probably because I waited for a better time when it was higher in the sky.)
I would suggest picking a good Saturn night if you ever go to a town observatory. Saturn, the moon, and Jupiter (in this order) make the most impressive viewing targets IMO. Mars will probably disappoint you visually. But it is cool to know you are looking at Mars, dispite the poor view.
However, Saturn varies over time because of the ring tilt from our perspective. If you go during a year with a non-tilt, you won't see much ring detail. Similarly with the moon: it goes through phases (lighting angle), and some phases are not that great in a telescope. Jupiter is probably the only consistent object WRT appearence and appearent size. It won't shrink, darken, or tilt funny on you. Even the Sun's disk changes in activity every 11 years (if you view it through a filter and projection). Although it is true that Jupiter's red spot does fade in and out depending on the type of clouds it is next to, or if it goes behind the planet. But there is more to Big Jup than just the red spot. You can usually see 4 of its moons quite easily (as starlike specs) and at least 2 tannish cloud bands on the planet.
Re:not all that rare, really (Score:2)
Not exactly. Mars disappoints very rarely. It has a distinctive red tinge. Infact when the sky is slightly hazy(due to vapour) like when all start are slightly dim, at that time mars is noticable because red light gets scattered the least. The best time is after it has rained and skys gone clear, the pollution leves are low, but water vapour content is high. Then you see the planed of war shine.
Infact there is an interesting story. During WW2 over europe, Mars was very very visible!
Re:not all that rare, really (Score:1)
I meant from a *telescopic* perspective. Yes, the color is quite distinct, but you can see that just with your naked eye and brighter yet with bonoculars.
My personal experience is that the telescope does not enhence the color any from what the eye sees. (Unless bad optics make pretty rainbow tinges.) Then again, such things tend to be subjective.
If you like red, then there are some nice red stars also. These are interesting because most are in their later stages of life, which our Sun will someday do also. IOW, looking at a red star is like looking at our solar system's future. Awe-inspiring and frightening at the same time.
It would be like when people reach 70 years old, they bloat up into a big red blob, stay that way for a year or two, and then suddendly burst open violently. The old-folks home would be a bit more complicated to manage if that was the case.
Re:not all that rare, really (Score:2)
perseverance (Score:2, Funny)
Sooo - Mars is getting closer... (Score:1)
Imagine... (Score:1)
What a good nightmare!
Popup ads everywhere! (Score:2, Interesting)
I hereby make a request that Slashdot should prohibit linking of any sites in a front page story which use popup or popunder ads.
All those in favour, say "I".
(Note to moderator: a little leeway, please)
Re:Popup ads everywhere! (Score:2)
And they are larger than ever before since the Neanderthals walked the Earth.
Re:Popup ads everywhere! (Score:2)
--
Blissfully unaware of popups since Mozilla 0.9.3
Re:Popup ads everywhere! (Score:1)
1. Get Website
2. Get Popups
3. Post Linux Story
4. ???
5. Profit!$
You must have meant... (Score:1)
Re:Popup ads everywhere! (Score:2)
I'm using Netscape 7, by the way.
So far almost everyone has suggested that I block popups. Is that a good solution for spam as well? Just block it? Or would you rather see it obliterated?
Why I ask that Slashdot not link to sites which use popups is to curb people sending in stories just to make money (I'm sure it's happening). Popups are also an annoyance, but that's not my main motivation for bringing up this issue.
Close as the neanderthals? (Score:2)
Why are we going to venus? (Score:2)
Fridge note to Martians (Score:2, Funny)
It will also be a good time to give back all that junk that NASA keeps crashing on your planet.
Oh sure, it's just mars, RIIIIIIGHT! (Score:5, Funny)
"No no, that's just mars. Mars is supposed to be extra bright this year. See how red it is?"
"Are you sure? It looks like a life-exterminating meteor to me."
"Nope, just mars. Definately mars. Nothing to worry about here. By the way, we'll be heading off to venus for awhile."
"Venus? Why? What's over there?"
"Oh nothing, nothing. Incredibly boring place actually, just clouds and all. Don't worry, the earth is perfectly safe, we'll be back later."
"Are you sure about that whole not being a meteor thing?"
"Of course. Got to be going now, want to have a good view."
"View?"
"Er I meant I'll be seeing you. After I'm back... from venus.... later."
Re:Oh sure, it's just mars, RIIIIIIGHT! (Score:1)
Since the Neanderthal? (Score:2)
Neanderthal: the new unit of measure.
What was that flash in the sky? (Score:2)
Mars: The God of War. (Score:1)
I see dead people.....
Re:Mars: The God of War. (Score:2)
In other news... (Score:2, Offtopic)
No. (Score:2)
Invasion? (Score:3, Interesting)
So that's the best time for the martians to launch their invasion fleet?
just a probe again (Score:1)
How is this planet going to survive on its own? IMO, we really need to start building settlements on other planets.Mars is probably a better choice than venus though, because of the somewhat less harsh atmospheric and temperature conditions.
Nasa and Esa and the other ones are not daring enough. They should be given bigger budgets. Space is the future of the human race.
Allready done by the Ruskies (Score:1)
Re:Allready done by the Ruskies (Score:1)
Look out! Mars, bringer of war is coming! (Score:2, Funny)
For the love of God no .... (Score:2)
Now they can come back again
Why? (Score:1)
Women are from Venus (Score:2)
Last Post! (Score:1)
purposes, or two evenings a week if they go regularly to church.
(7) After an employee has spent his thirteen hours of labor in the
office, he should spend the remaining time reading the Bible
and other good books.
(8) Every employee should lay aside from each pay packet a goodly
sum of his earnings for his benefit during his declining years,
so that he will not become a burden on society or his betters.
(9) Any employee who smokes Spanish cigars, uses alcoholic drink
in any form, frequents pool tables and public halls, or gets
shaved in a barber's shop, will give me good reason to suspect
his worth, intentions, integrity and honesty.
(10) The employee who has performed his labours faithfully and
without a fault for five years, will be given an increase of
five cents per day in his pay, providing profits from the
business permit it.
-- "Office Worker's Guide", New England Carriage Works, 1872
- this post brought to you by the Automated Last Post Generator...
Re:100 times further than the moon (Score:1)
Since you asked...
The moon is about 384,000 km (239,000 miles) from earth.
Re:100 times further than the moon (Score:2)
Woah cowboy!
If you are using a traditional rocket, not a Star Trek warp drive, the route from Earth to Mars is not a straight line.
Draw two concentric circles on a piece of paper, representing the orbits of the Earth and Mars. Now imagine an ellipse, with one foci the same as the focus of the two concentric circles. If you adjust the size of that ellipse so that it is tangent to the inner circle at one end, and tangent to the outer circle at the other end, I believe that ellipse would represent the minimum fuel path to Mars orbit.
If you follow this route you won't travel 35 million miles, you will travel something like a bit more than 300 million miles. How long will it take? There are 365 days in an Earth year, and IIRC about 650 Earth days in a Martian year. An object following that elliptical route from the Earth's orbit to Mars's orbit would take something like 500 days to complete its own orbit around the Sun. So about 250 days, which is close to your guess, but only coincidentally.
Of course arriving at Mars orbit isn't enough. You have to schedule your launch from the Earth so you arrive there at the point where you are tangent to Mars's orbit when Mars is at that point in its orbit.
This is further complicated by the orbit of the Earth and Mars not being circular. They are ellipses too. The Earth's distance from the Sun varies by 2 or 3 percent throughout the year. I don't know whether the bulges in their respective orbits are close to one another, or on opposite sides of their orbits.
250 days? So if the bulges in orbits lined up, your ideal launch window would be when the Earth was at its farthest distance from the sun, and Mars was 250 days away from its closest distance from the Sun. The probe should arrive not when we are at our closest approach to Mars, but when the Earth has travelled about 60 degrees past the point where Mars meets the probe -- about 100 million miles.
If the bulges don't line up, it gets even more complicated. Which orbit is less circular matters. And the greater gravitational attraction the probe will experience when it is closer to the Sun also plays a factor.
seriously.. ./ gotta do something about this SHIT (Score:1)
OMG.
Freedom is good. but there are so many f_cking dickheads what the freedom is there for.
Re:Europe Goes To Venus; Mars Comes to US (Score:1)
Actually, down here on the 'arse end of the world' we're aiming for Uranus.
Relax, have a laugh. I'm Australian and proud of it.