An international team of astronomers has discovered a massive cloud of gas and dust located in a little-known region of our Milky Way galaxy. The Giant Molecular Cloud (GMC) is about 60 parsecs—or 200 light years—long.

The Chandra X-ray Observatory view of galaxy group NGC 4839 has revealed that it is "plunging into the Coma galaxy cluster and leaving behind an extraordinary tail of superheated gas," according to NASA.

Comet 31/ATLAS is only the third interstellar object to ever be observed whizzing through the Solar System. While its origins are uncertain, the comet is thought to come from a part of the Milky Way populated by some of the galaxy’s oldest stars.

When it comes to star formation, not all galaxies are the same. Some are quenched, meaning they've depleted their star forming gas and form very few new stars. Some, like the Milky Way, are typical and form stars at an average rate.

Unusually fast-moving gas clouds near a nearby galaxy suggest they may have come from outside the galaxy. Scientists have identified high-velocity gas clouds in the nearby spiral galaxy M83, moving at speeds that differ markedly from the galaxy’s normal rotational motion.

This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory reveals how the dark matter is distributed.