Asteroid 255 YU55 will pass between the earth and the moon on Tuesday. The object is the larger than an aircraft carrier and would cause significant damage if it struck either our planet or the moon.

Predictably, it has become the subject of internet rumors that its orbit has changed and that it might therefore hit the moon. There is not the slightest actual evidence that anything like this has happened. Dan Yeomans, the director of NASA’s Near Earth Object Program has said, "We’re extremely confident, 100 percent confident, that this is not a threat."
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It’s been discovered that DNA can travel on a meteorite, meaning that life on Earth could have been seeded from another planet–maybe even Mars. If that’s the case, we don’t need to look for life on Mars–we’re looking at it every time we see another human being!

On the MSNBC website, Charles Q. Choi quotes chemist Jim Cleaves as saying, "People have been finding nucleobases in meteorites for about 50 years now, and have been trying to figure out if they are of biological origin or not."
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We recently had a close call, and it turns out that the UK is one of the most vulnerable places on Earth, when it comes to an impact from a space rock. Experts there have created a chart showing which countries are most likely to suffer severe loss of life or catastrophic damage if a large asteroid hits the earth.

They have decided that the most vulnerable countries are Brazil, Britain, China, India, Indonesia, Italy, Japan, Nigeria, the Philippines and the US. The countries on the list are highly populated nations, where an impact would mean millions of deaths.
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