New auroras detected on Jupiter’s four largest moons

New auroras detected on Jupiter’s four largest moons

[ad_1] Astronomers have discovered new auroras over Jupiter’s four largest moons: Io, Europa, Ganymede, and Callisto, observable at visible wavelengths. The new auroras reveal in greater detail the composition of the thin atmospheres of these Jovian moons,...
Are Black Holes the Source of Dark Energy?

Are Black Holes the Source of Dark Energy?

[ad_1] By the 1920s, astronomers learned that the Universe was expanding as Einstein’s Theory of General Relativity predicted. This led to a debate among astrophysicists between those who believed the Universe began with a Big Bang and those who believed the Universe...