News tagged with supernovas

Kepler's supernovae

(Phys.org)—Supernovae, the explosive deaths of massive stars, are among the most momentous events in the cosmos because they disburse into space all of the chemical elements that were produced inside their ...

Sep 18, 2012
4 / 5 (2) 0

Was Kepler's supernova unusually powerful?

(Phys.org)—In 1604, a new star appeared in the night sky that was much brighter than Jupiter and dimmed over several weeks. This event was witnessed by sky watchers including the famous astronomer Johannes ...

Sep 11, 2012
4.9 / 5 (9) 0 | with audio podcast

Hubble spotted a supernova in NGC 5806

(Phys.org)—A new image from the NASA/ESA Hubble Space Telescope shows NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). It lies around 80 million light years from Earth. Also visible in ...

Sep 02, 2012
4.6 / 5 (10) 0 | with audio podcast

How old are the first planets?

To build a planet you need lots of rubble and that means lots of heavy elements – stuff more massive than atoms of hydrogen and helium. The elemental composition of the collapsing nebula that gave birth ...

Aug 31, 2012
4.8 / 5 (9) 10 | with audio podcast