blogs.nasa.gov

a8JkZ TIL That oxygen turns into a liquid when frozen, at ‑297 degrees F (‑183 C). This liquification compresses it and allows it to fit in a smaller, lighter tank.
yQR8a TIL that the Moon has a crust, mantle, and core, experiences "moonquakes," and once had active volcanoes
KOZbG TIL The Earth loses hundreds of tons of oxygen to space. This happens at places near the poles, called polar cusps where the solar wind can collide with Earth’s atmosphere. Luckily the process will take billions of years to strip away the atmosphere completely.