Right after launching, a bunch of satellites heading to join the megaconstellation looks like a string of moving stars going up in the sky. Within a week or so, they reach a higher elevation and are ...

Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to spot in the sun's glow, according to astronomers. The orbit Venus takes ...

Findings about the chemical makeup of cave systems can teach us about life in places humans have yet to reach.

April skies feature close planet pairings, a bright meteor shower, and stunning views of the ancient star cluster M3.

The most elusive planetary aurora in the Solar System has finally been revealed in all its gently glowing glory. Far from the ...

In the vibrant yet fragile waters of the Gulf of Oman, spectacular phytoplankton blooms – visible even from space – unfold in ...

Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to spot in the sun's glow, according to astronomers. The orbit Venus ...

The SMITHSONIAN ASTROPHYSICAL OBSERVATORY is a part of the Smithsonian Institution which, in conjunction with the Harvard ...

Head to Sankofa Square on Sunday from 2 p.m. to 3:30 p.m. And while you’re there, check out the OCAD U Indigenous Student ...

The astronauts aboard the Apollo 8 lunar mission became the first humans to directly view the far side of the moon during ...

A glowing green bloom in the Gulf of Oman, caused by Noctiluca scintillans, signals severe oxygen loss and marine collapse, ...