July 31st, 2010
Waning Gibbous Moon
moon

Posts Tagged ‘black hole’

Seth Jarvis

Cosmic Quiz: Why can’t light escape a Black Hole?

This week’s Cosmic Quiz question comes from James Sylvester, who asks,
“If the speed of light is the highest attainable speed, why can’t it escape a black hole?”
First, a few words about the speed of light, which is indeed the fastest speed attainable through space.  How fast is it?

Seth Jarvis

Cosmic Quiz: Supermassive Black Holes

This week’s Cosmic Quiz winner is Carina Wytiaz, who asked,
I’ve heard that all galaxies have a black hole at the center. Does our galaxy have a black hole?
You heard correctly, Carina.  Astronomers have found evidence that all galaxies in the universe, including our own Milky Way galaxy, have Supermassive Black Holes at their centers.
A [...]

Clark Planetarium is proudly powered by WordPress
Entries (RSS) and Comments (RSS).