Our sun and the planets that circle it are part of a galaxy called the Milky Way. Its name comes from the Greek galaxias ...

Have you ever wondered how astronomers manage to map out the Milky Way when it's so incredibly vast? One of the most powerful tools is something called 21 cm radiation. Hydrogen, the most abundant ...

Now imagine doing that on a cosmic scale." A mysterious, one-off flash of energy from an unknown object outside the Milky Way has left astronomers puzzled. The research team, led by Steven ...

An artist’s illustration depicts the supermassive black hole at the center of the Milky Way galaxy, known as Sagittarius A*. It’s surrounded by a swirling accretion disk of hot gas and dust.

The Satellites Around Galactic Analogs (SAGA) Survey has looked at 101 spiral galaxies similar to the Milky Way and 378 satellite galaxies around those 101. Finding these smaller galaxies is ...

Using NASA's James Webb Space Telescope, Northwestern astrophysicists gained the longest, most detailed glimpse yet of the supermassive black hole at the center of the Milky Way. They found the ...