This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more ...

For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the ...

Dec. 20, 2024 — One of the biggest mysteries in science -- dark energy -- doesn't actually exist, according to researchers looking to solve the riddle of how the Universe is expanding.

Six planets grace the sky this month in what's called a planetary parade — Venus, Mars, Jupiter and Saturn are visible to the ...

JWST of NASA recently delivered a remarkable finding by discovering individual stars in a galaxy 6.5 billion light years away ...

Explore 9 cosmic mysteries, from galaxy formation to dark energy, the Big Bang, and life beyond Earth. Discover the ...

NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played ...

If a man’s thoughts are absorbed in calculating the gravity of all the mass and energy in the universe with its radius of 10 million light years, matters of the heart take a poor second place.

Black holes that have been obscured by clouds of dust still emit infrared light, enabling astronomers to spot them for the ...

A Precision Test of General Relativity. While Einstein’s famous theory of general relativity accurately describes the motion of celestial bodies in our solar system, less is kno ...

Contemporary physics still wrestles with a question posed by philosophers millenia ago: What is the universe made of?