These mysterious objects can have masses several million or billion times that of the Sun and are so dense that they warp ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside our galaxy.

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

There are quite a few astronomical events that have captivated humanity, and in February 2025, there's an especially rare one ...

Astronomers are sounding alarm bells as the world's most precious sky-observing location faces a light pollution risk due to ...

"The question 'Are we alone?' is one of the most significant questions, not just in the history of science, but in the ...

From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for ...

Every 26 months, the orbits of Earth and Mars allow us a closer look when Mars is at opposition — which will happen on Jan. 15, 2025.

The next great space telescope will study distant galaxies and faraway planets from an orbital outpost about a million miles ...

In another corner of the room loomed the sun shade (or “deployable aperture cover”), which will ensure the telescope can probe the cosmic darkness without getting the sun in its eyes.

Massive, once in a century asteroid to be visible flying past Earth - NASA estimates the asteroid Alinda is roughly the same width as Manhattan ...