Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km ; 432,300 mi ).

Astrophysicist Robert F. Wing did an in-depth look on the largest stars, recognising Antares, Betelgeuse, Mu Cephei, and VV Cephei A as well-accepted largest stars, while also looking at other stars known for cool temperatures and high brightness like …

Stars throughout our cosmos are undeniably gargantuan. In fact, the closest star to us, the Sun is a staggering 1.4 million km (865,000 miles) in diameter – so large that 1.3 million planet Earths …

2023年5月8日 · NASA's Hubble Space Telescope reveals the supercluster Westerlund 1, home of one of the largest known stars. Westerlund 1-26, a red supergiant, has a radius more than 1,500 times that of the...

2024年8月8日 · The best way to view these largest stars is with a telescope. This list includes the constellations to give you an idea of where in the sky to look. Let’s see what the largest stars are and where to find them.

This is a list of the most massive stars that have been discovered, in solar mass units (M ☉).

2024年10月1日 · Exploring the largest and most massive stars in the universe gives us valuable insights into the life cycles of stars and the dynamics of cosmic evolution. From UY Scuti’s record-breaking size to BAT99-98’s incredible mass, these stars challenge our understanding of what is possible in the universe.

2020年1月10日 · With that in mind, the following are the 10 largest stars currently known to astronomers. Betelgeuse, easily seen from October through March in the night sky, is the most well-known of the red supergiants. This is due in part to the fact that at roughly 640 light-years from Earth, Betelgeuse is very close compared to the other stars on this list.

None of the brightest stars in the sky are among the largest stars known. The largest first-magnitude stars, the red supergiants Betelgeuse in Orion and Antares in Scorpius, have radii of 640 – 1,021 and 680 solar radii. Betelgeuse was once the largest star known, but recent estimates give it a radius of 640 solar radii, less than half of ...

With red hypergiants, we can reach the largest stars known to us, probably the largest stars even possible. Red hypergiants are extremely bright and far away, which means even tiny uncertainties in our measurements can give us a huge margin of error for their size.