This cosmological simulation follows the development of a single disk galaxy over about 13.5 billion years, from shortly after the Big Bang to the present time. Colors indicate old stars (red), young stars (white and bright blue) and the distribution of gas density (pale blue); the view is 300,000 light-years across. The simulation ran on the Pleiades supercomputer at NASA’s Ames Research Center in Moffett Field, Calif., and required about 1 million CPU hours. It assumes a universe dominated by dark energy and dark matter.
Showing 22 posts tagged stars
From the Royal Observatory, Greenwich, Measuring the Universe! So how exactly do we measure things that are incredibly far away? Positioning over time, light, and math, math, math! This video contains a lot of information — even about sound waves and color shifts in light — but it’s such a great start to understanding how we see and measure what’s out beyond our Earth and our galaxy. And it demonstrates how important math and patience are in science!
via The Awesomer.
The California Academy of Sciences in San Francisco has created a primer on NASA’s Kepler Mission. Kepler has found over 1200 planet candidates, 54 of them in the habitable or “Goldilocks” zone. How do we see these planets from so so so so so far away? We measure light!
What to watch next: ScienceCasts: Getting to Know the Goldilocks Planet.
One of the kiddo’s favorite songs from They Might Be Giants’ Here Comes Science — after Meet the Elements, of course — here comes What is a Shooting Star? (Hint: A shooting star is not a star, it’s not a star at all. A shooting star’s a meteor that’s heading for a fall…)