A fortunate dozen spent a night with the 4.3-meter Lowell Discovery Telescope, happy to be gazing at some great deep-sky ...

Born of x-ray astronomy, a novel handheld gamma-optical camera stands at the nexus of medical and industrial imaging. By ...

In 1987, an enormous blue arc, thought to be hundreds of trillions of miles long, was first considered one of the largest ...

The sun's corona—the outermost layer of its atmosphere, visible only during a total solar eclipse—has long intrigued ...

For years, the commercial space sector has been abuzz about the prospect of satellite "super constellations" in Earth orbit.

The Giant Magellan Telescope offers sharper images, efficient light use, and the ability to find Earth-like planets.

There's no shortage of round celestial objects in our universe. Planets, moons and stars all exhibit lovely spherical shapes.

The University of Colorado, Boulder, is preparing to announce the establishment of the Colorado Space Policy Center (CSPC).

Scientists reveal the clearest images of the Sun’s corona using a new adaptive optics system, opening new paths for solar ...

As close to perfection as you’ll get for handheld astronomy. Read more below Best optical performance Best optical performance Some of the best optics on the market in an easily transportable ...

The number of satellites orbiting Earth is rising fast, thanks to private companies such as SpaceX. But just how big will ...

The green flash is a rare optical phenomenon above the horizon directly at sunrise or sunset. The color is caused by green ...