“Our galaxy and Andromeda are both so big, there’s hardly any space between the two galaxies.” What is a “RR Lyrae” star? Consider this: not all stars shine as bright as each othe ...

More than half of all stars in the sky have one or more companions ... they skirt Sagittarius A* (Sgr A*), the supermassive black hole lurking at our galaxy's center, as close as 0.095 light ...

At least 50 billion planets in our own Milky Way galaxy are likely to ... estimate that between 24% and 72% of all hydrogen-burning so-called main sequence stars have produced free-floating ...

NASA recently released images of the Andromeda galaxy, an "enticing empire of stars" that can be seen ... which looks markedly different from our own galaxy's history, according to NASA. Start the day ...

A close-up view of a prodigious number of stars in the Andromeda galaxy. Credit: NASA / ESA / B. Williams (U. of Washington) The Andromeda galaxy is a colossal marvel in our sky, hosting over 1 ...

"We have a measurement like this for only three other galaxies — all ... new stars. That's why McQuinn's team picked Leo P, a more isolated galaxy than the 80-or-so tiny ones within our region ...

Hubble's sharp imaging capabilities can resolve more than 200 million stars in the Andromeda galaxy, detecting only stars brighter than our sun ... galaxy uses up all the available interstellar ...

It took a few billion years after the epoch for the galaxy to reignite and start forming new stars. "We have a measurement like this for only three other galaxies -- all isolated from the Milky ...

The Hubble Space Telescope has produced the most comprehensive survey of the Andromeda galaxy, revealing new clues about its history. The Hubble survey, assembled from over 1,000 orbits and ...