For more than 400 years, astronomers both professional and amateur have taken a special interest in observing Mira stars, a class of variable red giants famous for pulsations that last for 80-1,000 ...

Earth's atmosphere is an impediment to astronomical observations. Not only is cloudy weather a problem, but temperature fluctuations in the atmosphere mean that ground-based telescopes require ...

When astronomers talk about an optical telescope, they often mention the size of its mirror. That's because the larger your mirror, the sharper your view of the heavens can be. It's known as resolving ...

Looking ahead: Existing radio surveys may contain signals that were never recognized as potential technosignatures. New ...

Using interferometry, an international team led by an astronomer of Paris Observatory (LESIA) obtained an unprecedented image of the surface of the red supergiant Betelgeuse, in the constellation of ...

Researchers from the University of Arizona, University of Maryland, and NASA’s Goddard Space Flight Center have proposed a new method for achieving ultra-high-resolution astronomical images using ...

Researchers in the US have demonstrated how quantum entanglement could be used to detect optical signals from astronomical sources at the single-photon level. Published in Nature, a team led by Pieter ...

Extended shrouds of gas and dust surround the Pole Star and two other stars of the same type, new observations reveal. Astronomers say the shrouds may be related to the stars’ pulsations, which are ...

Before everyone knew about the giant black hole lurking in the center of our Milky Way galaxy, was just an exceptionally bright source of radio emission. But since the discovery of Sagittarius A* ...