Space
Watch the Progress 79 cargo launch October 27
On October 27, 2021, Russia’s uncrewed Progress 79 cargo craft will launch from the Baikonur Cosmodrome in Kazakhstan. Here’s how to watch.
Astronomy Essentials
Flashing star in autumn? Here are 3 candidates
Some October night, check out 3 of the flashiest stars in the night sky ... at least at this time of year. Why a flashing star flashes, here.
Earth

True polar wander: A shift 84 million years ago

The fossil magnetism of rocks in Italy revealed true polar wander - a major shift in Earth's outer shell relative to its spin axis - 84 million years ago.
Clusters Nebulae Galaxies

Double Cluster in Perseus on October evenings

The Double Cluster in Perseus is a breathtaking pair of star clusters, easy to see in October. How to find it in your sky.
Space

See 42 of the largest asteroids in new images

Astronomers with the European Southern Observatory (ESO) have obtained new and more detailed images of 42 of the largest asteroids in the main asteroid belt.
Earth

New fossil discovery may add 100s of millions of years to animal evolution

A new fossil discovery may be the oldest animal fossil on record. The 890-million-year-old sponge would push back the evolutionary timeline for animals.
Tonight

Bright star Deneb transits at dusk around October 24

The Summer Triangle shifts westward in our sky, and Deneb transits about 6:30 p.m. to mark the shift toward winter - or summer in the south.
Constellations

Grus the Crane, home to ‘the bright one’

Grus the Crane is a constellation best seen from the Southern Hemisphere that has one notably bright star whose name actually means, "the bright one."
Space

Small galaxy consumes an even smaller galaxy

Scientists found evidence that a small galaxy - the Large Magellanic Cloud, a satellite of the Milky Way - has eaten an even smaller galaxy.
Space

White dwarf star abruptly switches on and off

Astronomers have witnessed a white dwarf switching on and off - or going from a bright to dim stage and back - over a period of just 30 minutes.