That symbiotic relationship resulted in the two organisms evolving together, and eventually those bacteria ensconced within became organelles called mitochondria. Every cell in your body except red blood cells has large numbers of mitochondria, and these are essential for the respiration process.
They break down oxygen to produce a molecule called adenosine triphosphate , which multicellular organisms use to power cellular processes.
We know there are adaptations that allow some organisms to thrive in low-oxygen, or hypoxic, conditions. Some single-celled organisms have evolved mitochondria-related organelles for anaerobic metabolism; but the possibility of exclusively anaerobic multicellular organisms has been the subject of some scientific debate.
And here's another article:
'Hamilton' to stream on Disney Plus this summer | WTGS
Broadway shutdown extended until at least Labor Day | WTGS
Tom Cruise working with NASA to shoot a film in space
On Tuesday, the head of NASA confirmed Cruise will make an action movie on the International Space Station. NASA says the actor will actually be launched into space to stay onboard the ISS.
If that pans out, cruise would be the first actor to endure extraterrestrial travel. No word on how and when Cruise will travel to the ISS.
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Space Alien Research Could Get Its First Grad Program - Scientific American
One day in spring 2018 astrophysics professor Jason Wright gave his students a tall order: make a substantial, novel contribution to the search for extraterrestrial intelligence (SETI)—in a semester. That kind of research is usually reserved for Ph.D. dissertations, the culmination of years of toil and turmoil.
At the helm of this still unbuilt ship is Wright, an affable, articulate guy who—until fairly recently—mostly studied exoplanets and not signs of their potential exobeings. His journey into SETI research was a coincidence, a collision between past and present that—like any collision—sent him spinning off in a new direction.
From Mars to Tabby’s Star: Extraterrestrial Discoveries – Now.
The year 1877 was a big year for Mars. Earth and Mars passed closer than usual in their orbits, making the red planet stand out as unusually large and bright for observers looking at it through telescopes.
One of those observers was the Italian astronomer Giovanni Schiaparelli, who used the opportunity to map the surface of Mars. Straining at the eyepiece to make out features at the very edge of visibility, he made what might have been the greatest of all extraterrestrial discoveries — if it hadn’t turned out to be a mistake.
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