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EarthSky Voices
Did early humans in Africa interbreed with a mysterious, extinct species?
New research suggests that early humans in Africa interbred with a ghost population that likely split from the ancestors of humans and Neanderthals between 360,000 and 1.02 million years ago.
February 24, 2020
Why does Arrokoth look like a snowman?
Meet Arrokoth - the most distant object yet visited by earthlings - seen by the New Horizons spacecraft in early 2019. It's very old, one of the first generation of objects in our solar system. Here's why it looks like a snowman.
February 21, 2020
Save the giants, save the planet
Protecting large animals such as elephants and whales, and large plants like the sequoias, has a disproportionate positive impact on the health of the planet and resilience to climate change.
February 12, 2020
New clues in the search for the universe’s oldest galaxies
An astronomer reports on a very old galaxy cluster - labeled XLSSC 122 - whose light has taken 10.4 billion years to travel across the universe to us.
February 11, 2020
Poll reveals climate change as most important issue for U.S. adults
A Harris Poll survey - conducted online in December on behalf of the American Psychological Association - reports that more than half of U.S. adults (56%) cite climate change as the most important issue facing the world today.
February 6, 2020
Australian smoke plume sets records
The recent wildfires in Australia sent one of the largest plumes of smoke higher into the the stratosphere than satellites have ever before observed.
February 6, 2020
Ötzi the Iceman’s final days
Scientists have identified ancient mosses in, on and around the 5,300-year-old glacier mummy that add to the story of the final 48 hours before his murder.
February 5, 2020
This Australian meteor crater is oldest known, says study
"We found the world's oldest asteroid strike in Western Australia. It might have triggered a global thaw."
January 28, 2020
Why planets have size limits
Why isn't there an endless variety of planet sizes in the universe? Why are most planets like those in our solar system: small and rocky, or big and gaseous?
January 27, 2020
Were snakes the source of China’s coronavirus outbreak?
A report suggests that snakes – the Chinese krait and the Chinese cobra – might have been the original source of the coronavirus that's triggered an outbreak of deadly infectious respiratory illnesses in China this year.
January 26, 2020
