NASA Finds Interstellar Matter From Beyond Our Solar System 75
An anonymous reader writes "For the very first time, a NASA spacecraft has detected matter from outside our solar system — material that came from elsewhere in the galaxy. This so-called interstellar material was spotted by NASA's Interstellar Boundary Explorer (IBEX), a spacecraft that is studying the edge of the solar system from its orbit about 200,000 miles (322,000 kilometers) above Earth. 'This alien interstellar material is really the stuff that stars and planets and people are made of — it's really important to be measuring it,' said David McComas, IBEX principal investigator."
Press Release Mania (Score:5, Insightful)
Where to start. First, go out at night - all those little dots in the sky ? They're called stars, and are all outside our solar system. (This has been known, depending on your point of view, for at least 400 years, and probably for 2 or more millennia.)
Second, it is pretty common for meteorites contain little inclusions of interstellar matter - organic matter [hawaii.edu], silica [hawaii.edu], and even (really tiny) diamonds [nature.com]. And, while we are at it, a certain fraction of the micro-meteors observed with radar (to get their orbits) turn out to be interstellar [mps.mpg.de] as well. (The fraction of interstellar micro-meteors suggests that there may be a few kg-sized interstellar meteorites waiting to be picked up out of the thousands in the Antarctic meteorite fields, which would be something.)
So, this is nice research, but it is only the first in its area, and it was silly of them to say "for the very first time."
Comment removed (Score:5, Insightful)