Space science news, articles and features | Page 61

Humans

Do your own experiment to see if your teabags really are compostable

If you make your own compost at home, you can participate in a citizen science project that investigates whether products are as biodegradable as they claim

Regulars

Space

How lessons learned from space exploration could feed the world

Comment

Concept drawing may not reflect final content. Image by Sarner International courtesy of National Museums Liverpool

Humans

Doctor Who: Worlds of Wonder review: The science behind the show

Culture

Space

The rise of SpinLaunch, the company planning to hurl things into space

News

https://www.jma.go.jp/jma/jma-eng/satellite/index.html Artist?s impression of Himawari-8 and Himawari-9

Space

Betelgeuse star dimming puzzle solved by chance with weather satellite

News

Video

Doctor Who Worlds of Wonder: The science behind the sci-fi

Video

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