Recent comments in /f/space

the_fungible_man t1_jbw6or7 wrote

>wasn't the Moon formed by a huge asteroid slamming into Earth

The moon was formed by a planet slamming into the Earth. There are no longer any rogue planets waiting to smack into the Earth.

Whether a smaller interstellar object would be detected before impact depends on its size and direction of approach. Such objects travel faster relative to the Earth than local asteroids, shortening to lead time between detection and impact. In the unlikely event the object approached from the sunward direction we might never see it coming.

BTW, the Earth has been struck by meteoroids of interstellar origin as recently as 2014. Our atmosphere affords us a great deal of protection from most of what's out there, interstellar or not.

>How could we stop it though?

For the foreseeable future, we couldn't.

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[deleted] t1_jbvracu wrote

You sir are an inspiration to me. I can not in words, begin to thank you for this incredibly fascinating phenomenon. Incredibly inspiring. I truly wish I could shake your hand sir. Consider yourself a hero in my world. May the universe bless you, your family, your crew and all you come in contact with. This is by far, one of the greatest words I’ve ever read in all my life.

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