But a huge one can destroy dinosaurs in the past and can destroy everything on earth here today.
It looks like none of the big ones are coming yet but this one "2004 BL86" is coming pretty close. But the news item is that it has a little moon of its own. See here.
Having a little moon is some status isn't it. Our fellow inner planets Venus and Mercury do not have one. Well you know the Earth has one. Saturn and Jupiter have 60+. Even the little demoted planet Pluto has 5. Even Mars has 2. And even if Venus has one and someone live there, they will NOT able to see it because of that thick cloud of death (greenhouse effect is real, my friend).
Now where do moons come from (especially our own moon)? There is actually not a written-in-stone solid answer. There are just theories like it is knocked out from earth or earth's gravity caught it. See here for 5 theories.
Look folks, it is gravity at work. That makes things fly around. It's the same (somewhat mysterious) force that keeps you on the ground.
Now this reminds me of a classic video game called Asteroids. In reality, even if you are at the Asteroid belt, asteroids would be quite sparse that you are not so likely to be surrounded by it. ooh hyperwarp! That's such great sci-fi idea. but you may get blown up in the process.
Now unless an asteroid destroys your town or land on your head, most of us (except astronomy enthusiasts) don't really care. We can barely see ANY object in the sky except the moon as we live in dense light and fog polluted cities. So go ahead gravity do your thing to push/pull, destroy stars and stuff while scientists continue to make a living to connect you to that Standard Model somehow. We other earthlings take gravity for granted and continue to just mind our own business here with our feet on the ground.
Will one day an asteroid come by so close that our earth's gravity pull it as moon #2? now THAT would be interesting.
No comments:
Post a Comment