The yellow hypergiants are thought to be generally post-red supergiant stars that have already lost most of their atmospheres and hydrogen. Some stars are much bigger and hotter than the Sun. This star is found to be about 370 times larger than the sun with a …
Review your knowledge of these stars with this interactive quiz and printable worksheet. Below are 10 more interesting facts about red giant stars you may not have known.
The coolest, slowest burning stars are red dwarfs. It is like millions of hydrogen bombs exploding every second. Yellow stars like the Sun are in-between, with surface temperatures of about 5500 degrees. Sooner or later, almost all of the hydrogen at the center has changed to helium. Betelgeuse belongs prominently in the constellation Orion and is part of the famous winter triangle seen in the night sky. In a normal star, like our Sun and all other main-sequence stars, this change happens at the very center of the star. The center will start to get smaller due to the star's gravity.
Like gas guzzler cars, these supergiants use all of their hydrogen and helium fuel very quickly.
It is one of the largest stars discovered to date, as well […] Read More.
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VX Sagittarii is a red hypergiant star located in the southern constellation Sagittarius.
WOH G64 is a red supergiant or hypergiant star located at a distance of 160,000 light years from Earth in the constellation Dorado. Red giant stars reach sizes of 100 million to 1 billion kilometers in diameter (62 million to 621 million miles), 100 to 1,000 times the size of the sun today.
This makes the layer just outside the center get hotter. The five largest known supergiants in the galaxy are red supergiants: VY Canis Majoris, Mu Cephei, KW Sagitarii, V354 Cephei, and KY Cygni. Blue-white stars are the hottest, reaching a sizzling40 000 degrees. The star will get brighter, sometimes as much as ten thousand times as bright as when it was on the main sequence. This makes a lot of energy (e.g. Very large red giants become neutron stars or black holes. It will be about 200 times bigger in diameter than it is now.
Red supergiants are supergiant stars of spectral type K-M and a luminosity class of I. light and heat). What is a Red Supergiant?
These are 'failed stars'. The red supergiant Antares is 800 times wider than the Sun. Soon (in only hundreds of millions of years) red giants will start to fuse helium to make other elements like carbon, nitrogen and oxygen. This hydrogen will fuse to make helium.
A red giant is a giant star that has the mass of about one-half to ten times as much as our Sun.
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Because yellow … Even cooler and smaller are brown dwarfs.
These … It is shorter than the billions of years a star spends on the main sequence.
Also catalogued as Stephenson 2-DFK 1 and RSGC2-18, it is the current record… Read More »Stephenson 2-18, Mu Cephei (μ Cep) is a red supergiant located in the constellation Cepheus. Some are only 50 million kilometers across, small enough to fit inside the orbit of Venus. It is one of the largest stars known, with a radius over… Read More »VX Sagittarii, Stephenson 2-18 (St2-18) is a red supergiant located in the constellation Scutum.
The Sun is medium-sized. Supergiants are some of the largest stars in the universe.They are larger than giant stars, and less luminous than hypergiants.They vary greatly in size. In general terms, red giants stars represent the late evolutionary stage of low-mass stars, whereas red supergiants stars are the late evolutionary stage of high-mass stars.