A massive star 2.5 million light-years away simply vanished — and astronomers now know why. Instead of exploding in a supernova, it quietly collapsed into a black hole, shedding its outer layers in a ...

A mysterious object has caused a long-lasting and extreme dimming of a distant star, but is this object a 'failed star' brown dwarf, or an exceptionally massive super-Jupiter exoplanet?

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

India has unveiled plans to build two new optical-infrared telescopes and a dedicated solar telescope in the Himalayan desert region of Ladakh. The three new facilities, expected to cost INR 35bn ...

Astronomers had gazed into that piece of space many times. This time, however, the James Webb Space Telescope, equipped with ...

It is essential that strict wavefront error (WFE) budgets be met when designing and manufacturing space telescope optics. These performance thresholds dictate a telescope’s ability to clearly and ...

The broadest planned survey by NASA’s upcoming Nancy Grace Roman Space Telescope will reveal hundreds of millions of galaxies scattered across the cosmos. After Roman launches as soon as this fall, ...

This newly discovered comet C/2026 A1 (MAPS), a rare Kreutz sungrazer, could blaze brightly in early April — or it could disintegrate entirely. Here's what to know.

A seven-hour gamma-ray burst, GRB 250702B, stuns astronomers and hints at powerful new cosmic engines still unknown to science.

Sagittarius A* may be a dense dark matter core instead of a black hole, offering a new explanation for the Milky Way’s central gravity.

Just in time for Valentine's Day, space offers a heart-shaped greeting. The star Mira A, about 300 light-years from Earth, ...