Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past.

When we think of color in the night sky, we often think of beautiful images of galaxies and nebulae. Unfortunately, most of ...

The plumes stretch farther than any yet seen, reaching millions of light-years long and potentially influencing the cosmos ...

A famous radio signal from space long considered as a possible sign of another civilization, in the end, falls flat.

If Earth had no air, the Moon would disappear during totality. But it does, so some sunlight is scattered into Earth’s shadow ...

Celebrate a Harvest Moon lunar eclipse and an occultation of the planet Saturn, just days before Neptune reaches opposition.

Come 2034, humans could witness the first-ever artificial meteor shower sparked by activity in space.

Astronomers have long investigated the effects of totality on animals, leaving one to wonder just what aspects trigger ...

Photons are indeed massless, but they still travel through our universe. You can picture the fabric of the cosmos as a sort of grid — one that is four-dimensional and incorporates not only the ...

UPDATE 9/10/2024: The Polaris Dawn mission successfully launched to low-Earth orbit aboard a SpaceX Falcon 9 rocket on Sept. 10 at 5:23 a.m. EDT. The crew’s first opportunity for their historic ...

UPDATE: Starship touched down in the New Mexican desert at White Sands Space Harbor at 12:01:35 a.m. EDT. The craft’s pair of drogue parachutes, three main chutes, and six airbags deployed in ...

I’ve been a rabid astronomy enthusiast for 48 years, and rarely have I been as juiced up for an observational event as I am for the eclipse coming in three years. On August 2, 2027, a total ...