Why build a telescope? YOLO, as the kids say. Having decided that, one must decide what type of far-seer one will construct.

The "potentially hazardous" asteroid 2025 FA22 will fly close past Earth at more than 24,000 mph on Thursday (Sept. 18). The ...

An international team led by the University of Geneva (UNIGE), including scientists from the National Centre of Competence in Research PlanetS, the University of Warwick, and the Canary Islands ...

The interstellar comet 3I/ATLAS, a rare visitor from outside the Solar System, might have been spewing gases for months ...

NASA's Nancy Grace Roman Space Telescope will help scientists better understand our Milky Way galaxy's less sparkly ...

A decade ago, the first gravitational waves confirmed that black holes collide. Telescopes soon revealed shadows of giants ...

In 1835, six articles about life on the moon appeared in the New York Sun, which caused a stir for a long time – until it ...

The first image of a black hole was of M87*, the supermassive monster at the center of the enormous elliptical galaxy M87. The image was only possible thanks to the Event Horizon Telescope, and follow ...

The reason it could be heard by teams on multiple telescopes and in all different directions was because that irritating noise was in fact the cosmic microwave background (CMB) – the leftover ...

Multi-year Event Horizon Telescope observations capture evolving polarization patterns around the supermassive black hole and reveal radio emission from the jet base.

While the James Webb Space Telescope stunned the world with its clarity and depth, NASA’s latest telescope takes things even further. With improved infrared detection and higher resolution imaging, it ...

When the "little red dots" were first discovered in 2022, scientists thought the objects might be galaxies as mature as the Milky Way, which is about 13.6 billion years old. That's because galaxies ...