May 2, 2025 · Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to …

Oct 22, 2024 · Scientists call a star that is fusing hydrogen to helium in its core a main sequence star. Main sequence stars make up around 90% of the universe’s stellar population.

Oct 5, 2022 · UCONN remote sensing experts used Harmonized Landsat Sentinel-2 imagery to quickly assess damage caused by the storm’s aftermath, providing spatially-relevant …

Dec 11, 2024 · Stars are the most basic building blocks of galaxies. The age, distribution, and composition of stars trace the history, dynamics, and evolution of their galaxy.

4 days ago · By studying clusters of stars born from the same gas cloud at the same time, astronomers can test theories about stellar development, including how stars form, age, and …

Oct 22, 2024 · A larger, more quickly evolving star can run out of nuclear fuel, explode in a supernova, and leave behind a far denser white dwarf, neutron star, or black hole.

Sep 16, 2020 · All stars are born in clouds of dust and gas like the Pillars of Creation in the Eagle Nebula pictured below. In these stellar nurseries, clumps of gas form, pulling in more and …

Aug 7, 2025 · The Orion Nebula is home to a star cluster defined by four massive stars known as the Trapezium. These stars are only a few hundred thousand years old, about 15-30 times the …

6 days ago · Stars are spread all across the canvas of the sky, but they appear denser in places. For example, there are clusters of stars, like the Pleiades, and the region of the sky where the …

Mar 9, 2005 · This illustration compares the different masses of stars. The lightest-weight stars are red dwarfs. They can be as small as one-twelfth the mass of our Sun. The heaviest-weight …