As companies like Elon Musk’s Starlink pump more and more satellites into space, Earth’s orbit is becoming more crowded than ever. Researcher and engineer Moriba Jah explains how the junk in space could cause big problems down here on Earth.
  • The Verge
  • Jan 19, 2021

Why the risk of orbital collisions is skyrocketing - The Verge

Congestion in space could cause big problems on Earth With each new satellite that reaches orbit, the space above our heads gets a little more congested. There are about 3,000 active satellites in u… [+1362 chars]

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Martian moons have a common ancestor - Phys.org
  • Phys.Org
  • Feb 23, 2021

Mars's two moons, Phobos and Deimos, have puzzled researchers since their discovery in 1877. They are very small: Phobos's diameter of 22 kilometers is 160 times smaller than that of our moon, and Deimos is even smaller, with a diameter of only 12 kilometers.…...