Friday, August 5, 2022

The Rare Earth Hypothesis: Why We Might Really be Alone in the Universe

08/05/2022

NEWS & FEATURES

The Rare Earth hypothesis: Why we might really be alone in the universe
NASA/Reto Stöckli, based on data from NASA and NOAA

Theory originators Peter Ward and Donald Brownlee explain why they think the development of complex life on other worlds is likely extraordinarily rare.

6" Jupiter Globe 
Why don't Jupiter's rings look like Saturn's?
NASA, ESA, CSA, and B. Holler and J. Stansberry (STScI)

Jupiter's rings are thin, gauzy structures of dust that can't compete with Saturn's stunning icy rings. New research now tells us why the bigger planet doesn't have bigger rings.

Russia's withdrawal from the ISS could mean an early demise of the orbital lab
STS-122 Shuttle Crew, NASA via flickr, CC BY-NC-SA

The head of the Russian space agency announced that the country will withdraw from the International Space Station after 2024. A space policy expert explains what this means and why it’s happening now.

Space and Beyond Box

The makers of Astronomy magazine present the August 2022 Space & Beyond Box theme...Mars! Subscribe today to get free shipping on this highly anticipated box, plus free shipping.

Minerals reveal a new understanding of original life on Earth
ARKENSTONE/Rob Lavinsky

A new approach to mineralogy attests to mineral diversity and could advance scientists’ understandings about life on Earth and other planets.

Ask Astro: What is the Caloris Basin on Mercury — and how did it form?
NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

What happened to the debris from the collision that formed the Caloris Basin on Mercury? Why didn’t it form a moon?

OBSERVING

The sky this week
Theophilos Papadopoulos (Flickr)

Your daily digest of celestial events coming soon to a sky near you. Updated Friday morning at 9 A.M. Central. 

PICTURE OF THE DAY

The long tail
Gerald Rhemann from Vienna, Austria

A long, thin dust trail is visible behind Comet 22P/Kopff, a comet that orbits the Sun every 6.4 years. This image represents 54 minutes of LRBG data with a 12-inch scope.

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Scientist Pankaj

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