Abundance of Earth-like Exoplanets The universe has no shortage of similarities to Earth when it comes to celestial ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

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

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

An alien signal, reverberating in the vacuum of space, that was picked up on Earth has been confirmed to be coming from an ...

Thirty years after the discovery of the first exoplanet, we detected more than 7000 of them in our Galaxy. But there are still billions more to be discovered! At the same time, exoplanetologists have ...

Astronomers have traced a mysterious fast radio burst to an unexpected place — an ancient, massive galaxy far removed from ...

Astronomers have detected fast-repeating radio bursts from a distant "dead" galaxy that should not contain the energy to ...

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