Use the bright star Sirius, in the constellation Canis Major, as a starting point to locate M46 in the constellation Puppis.

The Owl Nebula is an example of a planetary nebula — a type of object that yields glimpses of stellar death in slow motion.

With no Moon in the sky, we're centering on M15, which stands 60° high in the southern sky around 3:30 A.M. local daylight time. (Nighttime observers can also catch this object, though it rises about ...

Discover NGC 7008, the Fetus Nebula—an easy, bright planetary nebula in Cygnus perfect for small telescopes.

The smoking gun of the creation of lithium in explosions on white dwarf stars may have been found, in a spike of gamma rays ...

The constellation Lyra is faint, but it contains Vega, one of the brightest stars in our Butler night sky. As soon as it gets ...

Goar’s passion is the Dark Sky Telescope Program that runs through Sept. 21, and that takes place in the Hurricane Ridge ...

Such changes would make it difficult for life as we know it to survive on Earth. The increased heat and radiation would ...

Galaxies shine in a rainbow of emissions from gas, dust, and stars. Each of these building blocks emits light at specific ...

The moon will reach its peak at 4:37 p.m. EDT on July 10. During moonrise the lunar disk appears larger than it is as it is ...

The comet will zip past Mars’s orbit and reach its closest point to the Sun on 29 October 2025, at 1.35 astronomical units.