When Comet Siding Spring encountered Mars in 2014, it delivered a hefty magnetic punch.
Big fireballs occur about once every two to three years. But smaller meteors are much more frequent.
The galaxy closest to us, Andromeda, is 2.5 million light
years from Earth, yet it can still be seen with the naked eye. What goes
on in our galactic next door neighbor?
No comments:
Post a Comment