SpaceX猎鹰9号火箭推进器翻倒起火 - RFI - 法国国际广播电台



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Einstein’s theory challenged: Black holes could be frozen stars, claims study - Interesting Engineering
What Is a Galaxy? - ExtremeTech

Antechinus: The tiny marsupials where males have sex until they die — then females eat their corpses - Livescience.com
Volcano Were Blamed for the Greatest of Earth’s ‘Big Five’ Mass Extinctions — Scientists Might Have Been Wrong - Inverse