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The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, [1] that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin-based chlorophyll, making the surface biosphere appear purplish ...
Pale Blue Dot is a photograph of Earth taken on February 14, 1990, by the Voyager 1 space probe from an unprecedented distance of over 6 billion kilometers (3.7 billion miles, 40.5 AU), as part of that day's Family Portrait series of images of the Solar System.
Exposing Microorganisms in the Stratosphere (E-MIST) is a NASA study to determine if a specific microorganism could survive conditions like those on the planet Mars.The study transported Bacillus pumilus bacteria and their spores by helium-filled balloon to the stratosphere of Earth (~31 km above sea level) and monitored the ability of the microorganisms to survive in extreme Martian-like ...
There are plenty of reasons to look forward to spring. I, for one, am especially excited to celebrate warm-weather holidays like Easter, Mother’s Day and Cinco de Mayo (street-style tacos, FTW!).
Xiuhtezcatl Roske-Martinez (/ ʃ uː ˈ t ɛ z k ɑː t / shoo-TEZ-kaht; born May 9, 2000), also known by the initial X, [a] is an American environmental activist and hip hop artist. [2] [3] Martinez was the Youth Director of Earth Guardians until 2019.
Earth is the only known place that has ever been habitable for life. Earth's life developed in Earth's early bodies of water some hundred million years after Earth formed. Earth's life has been shaping and inhabiting many particular ecosystems on Earth and has eventually expanded globally forming an overarching biosphere. [243]
“Mirror bacteria” made in a lab could endanger all life on earth, an international group of leading scientists have warned in a new report. All building-block molecules of life like DNA ...
While you might be wondering why the heat doesn't kill kill the bacteria entirely, there are a number of factors involved. For starters, a microwave heats things unevenly so not everything is ...