For 15 years, one nearby exoplanet refused to reveal its secrets, its spectrum stubbornly flat, its atmosphere unreadable.

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Early rises — and late night skywatchers — will get the chance to spot a wealth of spectacular sights on the lunar surface.

York was the first researcher to find an isotope of hydrogen known as deuterium, which helped give researchers an understanding of dark matter.

Today’s observatories document every pulse and flash in the sky each night. To understand how the cosmos has changed over longer periods, scientists rely on a more tactile technology.

The James Webb Space Telescope has confirmed the most distant, early galaxy in the known universe. The new contender, MoM-z14, is visible just 280 million years after the Big Bang. When you purchase ...

Editor's note: This article was updated on Jan. 29, 2026. It was originally published in May, 2025, when the related study was released as a preprint. The study has now been peer-reviewed and ...

I have been writing about the Giant Magellan Telescope for a long time. Nearly two decades ago, for example, I wrote that time was “running out” in the race to build the next great optical telescope ...

It’s Christmas morning. Snow is gently falling outside, cinnamon rolls are baking in the kitchen, and you just opened the present you’ve been dreaming of — a telescope! But after the initial ...