Astronomers are once again getting excited about a rare nova that could appear in the night sky anytime from now into the ...

Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or 'hot Jupiters,' astronomers can spend months or years ...

T Coronae Borealis, a binary star system about 3,000 light years away, is usually far too dim to see with the naked eye.

However, scientists generally think it would take less than 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 ...

The research by black hole expert Heino Falcke ... This is the time it takes for white dwarf stars, the most persistent celestial bodies, to decay via Hawking-like radiation.

That's because a white dwarf star has about the same mass as Earth's sun, Hounsell said. Its gravity is extremely powerful — not as strong as a black hole, according to the Adler Planetarium ...