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NASA on Tuesday unveiled a new batch of images from its new powerful space telescope, including a foamy blue and orange shot of a dying star. The first image from the $10 billion James Webb Space ...
Scientists have homed in on a popular cosmic object, and are now seeing it in a whole new neon light. The Ring Nebula, also called Messier 57, is a cloud of gas and dust shed from a dying star ...
Physical cosmology. Current observations suggest that the expansion of the universe will continue forever. The prevailing theory is that the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario once popularly called "Heat Death" is now known as the "Big Chill" or "Big Freeze".
The Death Star is a fictional space station and superweapon featured in the Star Wars space-opera franchise. Constructed by the autocratic Galactic Empire, ...
Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the star, its lifetime can range from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the current age of the universe. The table shows the lifetimes of stars as a ...
The short answer is dying stars. Louis Allamandola, director of NASA's astrophysics and astrochemistry lab, says that as stars combust, they release polycyclic aromatic hydrocarbons, which ...
Stellar nucleosynthesis. In astrophysics, stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars. Stellar nucleosynthesis has occurred since the original creation of hydrogen, helium and lithium during the Big Bang. As a predictive theory, it yields accurate estimates of the observed abundances of ...
Red giant. A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses ( M☉ )) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around 5,000 K (4,700 °C; 8,500 °F) or lower. The appearance of the red giant is from yellow ...