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 ...

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 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 ...

Get the latest federal technology news delivered to your inbox. The Air Force Research Laboratory is engaging in a new collaboration that will provide U.S. and U.K. researchers and astronomers with ...

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 ...

For astronomers, one of the greatest challenges is capturing images of objects and phenomena that are difficult to see using optical (or visible light) telescopes. This problem has been largely ...

The quantification of large optics demands metrology systems that operate in the context of turbulence, vibration and additional challenges. Figure 1. Measurement of large optics, such as this 8-meter ...

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* ...