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?
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 [...]
I’m betting doughnuts against the world ending in 2012.
Any takers?
The “2012″ disaster-pic opens Friday, and some folks are actually asking, “Is the world really going to end in 2012? Will the Earth’s magnetic field really reverse? Is there really a planet Nibiru headed toward us? Is it all tied to the Mayan calendar?”
This week’s cosmic quiz question was submitted by Daniel Wallace, who asked, “How do astronomers figure out the size of planets orbiting other stars (and even what their atmosphere is made of)?”
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