Japan And EU Plan Joint Mission To Mercury 32
Devar writes "Japan and the European Space Agency have revealed their plans for a joint mission to Mercury that would be the first to land a probe on its surface. The mission also includes two orbiters to map the surface, all due to be launced in 2010."
....... Puff... (Score:5, Funny)
2010 (Score:4, Funny)
Joint mission? (Score:4, Funny)
--riney
Re:Joint mission? (Score:4, Informative)
That's hot enough to keep it lit. And get you fried, in this case, in more ways than one.
Re:Joint mission? (Score:1)
Re:Joint mission? (Score:5, Informative)
Firstly, of course the moon rotates as well. It just rotates at the same angular velocity at which it orbits Earth, so we always see the same face. This is caused by a process called tidal lock.
Mercury is in tidal lock with the sun. But because its trajectory is elliptical, it's not a 1:1 lock, but a 3:2 lock: there are 3 Mercury days in 2 Mercury years.
A Mercury day is 58.6 Earth days, a Mercury year is 88 Earth days, according to this fact sheet [the-solar-system.net]. 58.6 days should be enough for most missions.
Re:Joint mission? (Score:3, Funny)
Oh sure, that's what you say now. But what about in the future when operating systems get larger and more complex? I predict that in 20 years it'll take 60+ days just to boot the OS on the probe. (At least if they're still using 8088 chips on those things)
Re:Joint mission? (Score:1, Redundant)
Actually the moon, like all bodies, rotates just like Mercury. Like the Moon, Mercury's rotation is in sync with the Sun so the same side is always lit. You have one side that is always blazingly hot, one side that is freezing, freezing cold.
Re:Joint mission? (Score:2)
Re:Joint mission? (Score:3, Informative)
A) Mercury does rotate. However, your "proper answer" got it wrong; while Mercury rotates on its axis every 58.6 days, it's moved a long way around the sun in that same time. As a result, it's day (period between one sunrise and the next) takes longer than its rotation period [arizona.edu]. In fact, it takes about 3 rotations to get one 'day'. Also, because of the elliptical orbit and long rotation period, you can get a funky double-sunset effect [nasa.gov], when the sun sets, then rises again
FP (Score:3, Funny)
Word not found... (Score:3, Funny)
Suggestions for launced:
1. lensed [m-w.com]
2. lanced [m-w.com]
3. linseed [m-w.com]
4. launched [m-w.com]
5. launces [m-w.com]
6. lancer [m-w.com]
7. leaned [m-w.com]
8. launce [m-w.com]
9. lenses [m-w.com]
10. leanest [m-w.com]
11. leanness [m-w.com]
12. lancet [m-w.com]
Second mission to Mercury. (Score:1)
According to the article, NASA is planning on launching a probe in '04. But we all know it's going to end up hitting Venus on the way in.
Why Mercury? (Score:2)
So why Mercury? Especially considering the difference between the hottest daytime temps and the coldest night temps...
This has me on curiosity alone.
Re:Why Mercury? (Score:5, Informative)
Re:Why Mercury? (Score:3, Informative)
It is, the only problem being that it's really, really hot. As far as I understand, you have to have a reflective shield turned to the Sun at all times, and even so, your electronics are in for a very rough ride. This makes soft-landing much harder for surface probes, unless you land on the shaded side. Impact landing should be easier, but doesn't collect nearly as much information. Even worse, once you soft-land, you
Re:Why Mercury? (Score:5, Informative)
Well, at the moment, ESA has a mission going to Mars (Mars Express), Venus shortly (Venus Express), Saturn is covered by Huygens (in combination with Cassini).
Nothing is going to Jupiter, Uranus, Neptune, or Pluto at the moment, but most of those are real buggers to get to easily.
Mercury is the only planet in the inner solar system which ESA hasn't sent anything to yet (or is about to). Add to that the fact that so little is known about it, Mariner 10 left many questions unanswered, and it's about time we had a look.
Re:Why Mercury? (Score:3, Informative)
Re:Why Mercury? (Score:2)
If you dont get it...age.. its the only way
S
Re:Why Mercury? (Score:3, Insightful)
>
> This has me on curiosity alone.
I think you just answered your own question: Curiosity alone.
Off the top of my head, the insane spread between day/night temperatures would probably allow us to learn a lot about Mercury's composition by watching the rocks cool.
I'd imagine they can also learn a lot about the sun during the approach and insertion/landing phase.
Not do diss
BepiColombo (Score:4, Informative)
One of the more exciting bit about the mission is the lander (or impactor, depending) which is one of the things which distinguishes it from the US Messenger. Unfortunately, this is also one of the elements most likely to be removed, due to cost and complexity.
Re:BepiColombo (Score:3, Funny)
Then it will turn around, and say,
"There's just one thing that puzzles me, sir..."
Re:BepiColombo (Score:1)
Re:BepiColombo (Score:1)
Re:BepiColombo (Score:3, Funny)
No sir, the mission didn't fail. We just had an unexpected revision in mission type.
-
ahhh (Score:1)