The most famous comet of all is headed back toward Earth. Halley's comet reached aphelion—its farthest point from the sun—on Dec. 8, at which point it began its long journey back to the sun.
Planetary Sciences
Dec 12, 2023
0
891
Astrophysicists Szabolcs Marka at Columbia University and Imre Bartos at the University of Florida, have identified a violent collision of two neutron stars 4.6 billion years ago as the likely source of some of the most coveted ...
Astronomy
May 2, 2019
28
2656
Astronomers have caught a black hole hurling hot material into space at close to the speed of light. This flare-up was captured in a new movie from NASA's Chandra X-ray Observatory.
Astronomy
May 29, 2020
1
4270
Bright lights, big city.
Social Sciences
Mar 26, 2021
1
466
Talk about a rude awakening. Brood X cicadas are coming of age in world that is drastically altered from the one their ancestors knew.
Plants & Animals
May 10, 2021
2
494
Every season has its characteristic star constellations in the night sky. Orion—one of the most recognizable—is distinctly visible on crisp, clear winter nights in the northern hemisphere. The constellation is easy to ...
Astronomy
Jan 14, 2020
1
2290
Here's something we don't see very often: an Earth-grazing meteoroid.
Astronomy
Sep 29, 2020
2
1742
Flick a switch on a dark winter day and your office is flooded with bright light, one of many everyday miracles to which we are all usually oblivious.
Quantum Physics
May 12, 2016
5
1705
A hypnotizing vortex? A peek into a witch's cauldron? A giant space-spider web?
Astronomy
Oct 28, 2021
1
364
About 2.6 million years ago, an oddly bright light arrived in the prehistoric sky and lingered there for weeks or months. It was a supernova some 150 light years away from Earth. Within a few hundred years, long after the ...
Astronomy
Dec 11, 2018
19
512
