A ring or sphere could, apparently, be stable if surrounded by the right sizes and gravities of other stars.

a projection of the Earth's own longitude lines on the celestial sphere. This alignment is also called a conjunction. New moons are invisible unless the moon passes directly in front of the sun ...

According to information on the HVT website, Manaiakalani was the name of Maui’s fish hook that he used to catch a giant fish ...

Photoshop CS6 tutorial showing how to make a colorful nebula and celestial sphere in deep space. PSD file: <a href="http://goo.gl/NVVMVm">http://goo.gl/NVVMVm</a ...

SPHEREx will survey hundreds of millions of galaxies, as well as search the Milky Way for water and organic molecules essentials for life as we know it.

Because we designate the time of actual full moon as being when the moon is 180 degrees around the celestial sphere from where the sun is, the timing of the full moon depends on one's time zone.

With people wishing upon the year’s first shooting stars, the celestial sphere continues to turn serenely. --The Asahi Shimbun, Jan. 4 Vox Populi, Vox Dei is a popular daily column that takes up ...

Following a checkout period lasting one month, the observatory – which measures 8.5 feet tall, 10.5 feet across, and weighs 1 ...