What is the radius of Betelgeuse? How many Suns would fit in Betelgeuse? Why is Betelgeuse red? How does a nebula become a protostar? Why does Rigel shine as brightly as Betelgeuse? What is the temperature of Betelgeuse? What happens during the planetary nebula stage?
What happens when the planets align? What causes a full moon? What happened to the Arecibo Observatory? How long is the lunar solar cycle? Can two planets crash and cause a supernova? If so, what happens after that? What happens after the planetary nebula stage?
What happens at if I look at an eclipse? Looking at a solar eclipse directly or without protection can cause "eclipse blindness" or retinal burns, which can damage or even destroy cells in the retina, negatively affecting your vision. Is it okay to look at a solar eclipse? No, it is ...
Planetary nebula: The Helix Nebula This is composed of expanding gas that was blown off by a star as it collapsed to a white dwarf. (Image credit: NASA, ESA, J. Hester, A. Loll (ASU)) Supernova remnant: The Crab Nebula Exactly as the name says, this is all that remains of a ...
Pluto, which had at that time been known as a planet, was downgraded. Instead of being downgraded to anasteroid, it became adwarf planet. A dwarf planet is a small planet that fails the third test. The asteroid Ceres, in orbit around the Sun between Mars and Jupiter, was upgraded from...
The Chinese calendar is another lunisolar example with 12 months that are presented as numbers or Chinese zodiac animals. The months alternate in lengths of 29 and 30 days for a total of 354 days, so an extra month is added in leap years — which happens seven times within a 19-year per...
10 and 29 solar masses tend to produce neutron stars when they explode. Then there is the theoretical quark star which form when neutron degeneracy breaks down. Anything more dense would create a black hole. So if we continue the progression of degeneracy, what happens when quarks break down?
Planetary Nebulae are created when a star comes to the end of its life. When the star collapses, it might not explode like a supernova but expand and die like theRing Nebulain the constellation ofLyra. The Ring Nebula and many others will contain a white dwarf at the centre. Ref:Univers...
but it also happens to hold the Guinness World Record for the fastest recorded katabatic wind in history, which was measured in 1912. For reference, katabatic winds are essentially avalanches made of air — a huge air mass that gravity forces down along the terrain when it cools down and ...
is there evidence of the stars in globulars going through nova explosions. Is this not the what happens when low mass stars leave main sequence. Helium fuses to Carbon, and then lacking mass, the star collapses under pressure of gravity. ...