Did a 2nd asteroid help kill the dinosaurs?
Scientists found a crater in the North Atlantic that's 66 million years old, which could be a 2nd asteroid related to the dinosaur-killing Chicxulub event.
Human World
Launches: Russians unveil space station model
On today's Launches blog: The Russian space agency Roscosmos unveiled a model of the space station it intends to orbit within the next 8 years.

Sun activity: More geomagnetic storming and auroras

Sun activity for August 19, 2022, remains moderate. Auroral displays have continued, with more to come.

Webb’s largest image of galaxies yet

Webb has taken the largest image of galaxies yet. The newest release covers 8 times as much space as its original deep-field image. See the new images here.

Mars and the moon, August 19 and 20 mornings

Mars and the moon are close together in the sky on August 19 and 20, 2022. The moon reaches 3rd quarter phase at 04:36 UTC on August 19.

A rare Neptune-sized planet orbiting a giant star

Astronomers say they have found a rare Neptune-sized planet orbiting a giant hot star, providing clues about why these worlds often lose their atmospheres.

Dark matter mystery in Fornax Cluster

A new study suggests dwarf galaxies in the Fornax cluster lack of dark matter halos. This finding challenges the cosmological Standard Model.
Human World

Sudden downpour in Paris floods metro stations

Paris floods inundated some metro stations on Tuesday evening, August 16. A sudden, torrential rain struck the city just as commuters were leaving work.

Asaph Hall finds Mars moon Phobos 145 years ago today

On this date in 1877, American astronomer Asaph Hall discovered Phobos, the larger of Mars' 2 moons. He discovered the other moon, Deimos, later that year.
Astronomy Essentials
Clusters Nebulae Galaxies

See Messier 20, the Trifid Nebula

If you have an extremely dark sky, you can see the Trifid Nebula on as a fuzzy patch in the Milky Way. Binoculars show more and a telescope even more detail.