The last time CO2 concentrations reached today’s level was 3 million years ago, during the Pliocene Epoch. Hear from geoscientists who see evolving conditions in the Arctic as an indicator of how climate change could transform the planet.

Earlier this month, Roger Penrose, Reinhard Genzel, and Andrea Ghez split the 2020 physics Nobel Prize for decades of work on black holes. Click here to learn more about their monumental achievement and about the history of our understanding of these exotic objects in space.

The sun's second planet, Venus, as seen from the BepiColombo spacecraft as it passed on its way to the innermost planet, Mercury, earlier this month.

Rather than completely disappear - even when vaccines become available- it's likely that the coronavirus SARS-CoV-2 will be added to the family of infectious diseases known as “endemic” in the human population.

According to new research, the red supergiant star Betelgeuse - which began to dim dramatically in brightness in late 2019 - might not explode for another 100,000 years. The star is also smaller and closer to us than first thought.

Take a video tour of asteroid Bennu’s remarkable terrain and read a list of 10 cool things scientists know about this pristine remnant from the early days of our solar system.

Planetary systems with both super-Earths and Jupiter-type planets may be common, according to a new study. As in our own solar system, the giant planets would act as "bodyguards" protecting the smaller planets from asteroid impacts.

The Rosette nebula glows in this telescopic photo by EarthSky Community member William Shaheen.

These next several evenings - October 21, 22 and 23, 2020 - watch for the waxing moon to sweep by the gas giant planets, Jupiter and Saturn.

In the past few days, several EarthSky Community members around the world shared their photos of the young moon, a thin crescent in the west after sunset. Beautiful! Thanks to all who contributed.