杏吧原创

$Mare Crisium is a large, dark, basaltic plain on the Moon that filled an ancient asteroid impact. Basaltic plains on the Moon were created by early volcanic eruptions. Mare Crisium was flooded with basaltic lava, a dark, runny lava commonly found on Earth. Basaltic plains on the Moon are also known as lunar maria, because of a mistaken belief by early astronomers that these dark areas were oceans ? ?maria? is the Latin word for ?seas.? We now know these spots to be plains of basalt created by early volcanic eruptions, but the nomenclature of ?maria? (plural) or ?mare? (singular) remains. The basalts in Mare Crisium range in age from 2.5 to 3.3 billion years old! These dates come from measuring the radioactive isotope signatures of samples returned from Mare Crisium by the Soviet Luna 24 mission. Along the rim of Mare Crisium lies an outer boundary of wrinkle ridges. Wrinkle ridges are commonly found in places where the surface has contracted. As the surface is compressed, it bends and fractures, and can form complicated patterns of faults and folds.$

Space

Bricks made of dust from the moon and Mars could make space buildings

Baking a mixture of saltwater and materials that mimic dust from the moon or Mars at a high temperature produced sturdy bricks that could be used to build human habitats in space

Participants light candles ahead of the sixth annual Bridge Of Life Suicide Awareness/Prevention candlelight vigil organised by YEG Mental Health, a group dedicated to raising awareness about mental health issues in the greater Edmonton area. On Friday, September 10, 2021, in Edmonton, Alberta, Canada. (Photo by Artur Widak/NurPhoto via Getty Images)

Health

Firearm suicides are rising in the US despite declining globally

Comment

Twitter and the dangers of the US myth of free speech

Society

Science shows that dogs feel things like us. Legislation must catch up

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Environment

Nuclear power can help us reach net zero, but what is its true cost?

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Physics

Teleportation trick shows promise for a future quantum internet

View of the segmented trap inside the cryostat through the addressing viewport.

Technology

A quantum computer could catch its own errors on any calculation

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Technology

Robot that can do laundry by itself will help test washing machines

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Space

One in every 50 planets may have been stolen from other stars

Mandatory Credit: Photo by Robin Utrecht/Shutterstock (12758494i) Portrait of Willemien Terpstra and Marjan Minnesma Willemien is high in the chemical industry, Marjan is the boss of Urgenda. Willemien Terpstra and Marjan Minnesma, The Hague, Netherlands - 10 Dec 2021

Environment

Marjan Minnesma: Climate litigation pioneer wins environmental prize

The 2022 Goldman Environmental Prize has been awarded to Marjan Minnesma, who sued the Dutch government over its carbon emissions plans

Life

Ecological toll of Japan’s switch to farming revealed by 1850s maps

Environment

UK to relax law on gene-edited food in post-Brexit change from EU

Health

Smallpox drug helped treat monkeypox in one UK patient in 2021

Technology

Driverless cars could force other road users to drive more efficiently