The Earth supports the only known life in the universe, all of it depending heavily on the presence of liquid water to facilitate chemical reactions. While single-celled life has existed almost as ...

A new European-led telescope could map the dusty, hidden half of the universe, all without using fossil fuels. If you have ever seen the Milky Way in the night sky, you probably noticed that it looks ...

Scientists imaged the heart of the OJ 287 galaxy, uncovering a curved plasma jet around what appears to be two merging supermassive black holes. The structure reveals unimaginable energy levels and ...

For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on a mountain top. But a reflecting ...

On September 9, 1999, a 25-year-old Harvard graduate student, David Charbonneau, made one of the closing century’s most consequential astronomical discoveries, using a four-inch telescope set up ...

Later this year, a prototype telescope is slated to land on the moon. It could usher in a new era of lunar radio astronomy. The far side of the moon (shown in this image from Artemis II) is an ideal ...

Concept design for a rectangular space telescope, modeled after the Diffractive Interfero Coronagraph Exoplanet Resolver (DICER), a notional infrared space observatory, and the James Webb Space ...