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Editors of EarthSky

Astronauts and cosmonauts call for global cooperation on asteroid threat

“Asteroid impacts have dramatically altered the course of life on Earth and a rogue asteroid will certainly strike Earth, posing a global threat to human life and society.” - Astronaut Tom Jones

A glimpse of the violent past of Milky Way’s giant black hole

A new study shows that the Milky Way's supermassive black hole had at least two major outbursts in the last few centuries.

Aboriginal hunting practice increases animal populations

Burning approach mixing practical philosophy and knowledge leads to near doubling of lizards and improves habitat.

Our Milky Way galaxy wobbles

Our home galaxy, the Milky Way, makes small wobbling movements. Possible causes include the passage of a smaller galaxy through our own.

The most distant galaxy yet

It's the most distant, and therefore the earliest, yet discovered. It's seen as it was just 700 million years after the Big Bang.

View from space: Russian missile contrail

Two astronauts' photos of the contrail from a Russian missile launch

Link between Neanderthals and humans is still missing

The search for a common ancestor that connects modern humans with the Neanderthals who lived in Europe thousands of years ago isn’t over yet, researchers say.

How climate change affects microbial life below the seafloor

Sediments from the deep sea give insight into the dynamics of the deep biosphere.

View from space: Life reclaims Mount St. Helens

Two satellite images show how life has returned to Mount St. Helens since the volcanic eruption of 1980.

1,000 days of the sun in three minutes

Watch three years of solar activity in three minutes, in this NASA video.