The final milestone in construction was reached on November 25, as technicians carefully joined the giant telescope's inner ...

If you feel a thrill every time we discover something new about the cosmos, then November 25th may have been a noteworthy day ...

NASA is sounding a clear alarm about the way SpaceX is reshaping low orbit, warning that the company’s satellite swarms and ...

NASA’s James Webb Telescope discovers the oldest supernova ever seen, offering insights into early universe star formation ...

Conventional telescopes are limited in detecting low-surface-brightness (LSB) structures, which are essential for studying ...

The discovery of two remarkable substellar companions orbiting distant stars has been announced by an international team of ...

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

Proliferating satellites are beginning to harm the science work of the beloved Hubble Space Telescope and other observatories ...

CAPE CANAVERAL, Fla. (AP) — Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe. At double the width of our ...

Starlink is growing fast, and SpaceX has filed paperwork for as many as 42,000 satellites. Others such as OneWeb, Amazon, ...

A telescope in Chile has captured a stunning new image of the Butterfly Nebula, a grand and graceful cosmic wonder.

Scientists flew the XL-Calibur telescope on a high-altitude balloon to measure polarized X-rays from Cygnus X-1. These measurements reveal details about the chaotic, superheated material swirling ...