Search results for “astrophysics”

ScienceCasts: Hubble’s Contentious Constant

There are two leading ways to measure the universe's rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal. Visit http://science.nasa.gov/ for more. Click here to see more videos: https://alugha.com/NASA

What Happens at an Event Horizon?

For more Science Videos: https://lt.org/ * Every galaxy seems to have a supermassive black hole in its center. A black hole is defined as such because nothing can escape from a certain point inside, not even light. There is, however, a last stable orbit which is called the event horizon outside of w

ScienceCasts: Readying the Webb Telescope for Launch

Click here to see more videos: https://alugha.com/NASA Visit http://science.nasa.gov/ for more. Stringent testing is underway to prove the James Webb Space Telescope can handle an Earth-shaking take-off and still capture the universe’s first light while deeply ensconced in the hyper-cold of space.

NASA ScienceCasts: Two Sides of the Same Star

A neutron star comes from a large star that has run out of fuel, and exploded as a supernova. First it becomes a radio pulsar and later becomes a magnetar. Or maybe it’s the other way around! NASA Science: http://science.nasa.gov/ Click here to see more videos: https://alugha.com/NASA

ScienceCasts: The Special Ingredients... of Earth

Researchers using a Japanese X-ray satellite with NASA participation have found the chemical ingredients of Earth-like planets in the Virgo cluster of galaxies. Click here to see more videos: https://alugha.com/NASA Visit http://science.nasa.gov/ for more.