›

Hashtags

›

outer space

Justin Lin talked to lots of "confused rocket scientists" before he took 'F&F' to space. 🚀

Fun Fact

Justin Lin

#outer space

Check out more hashtags that other people found fun like Film producer, Healthy diet or Houston. Find out the age, birthday, star sign, height, relationships and career highlights of your favorite celebrities. Whether you’re interested in facts about Music, Fashion or Entertainment or you just want to see articles and fun facts from Rising Stars like Rico Nasty, we got you covered! Scroll through thousands of fun facts on profiles of the likes of Vanessa Carlton, Aaron Eckhart or Sarah Michelle Gellar or find them in categories like Society and Art.

outer space

Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies. Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvins. The plasma between galaxies accounts for about half of the baryonic (ordinary) matter in the universe; it has a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvins; local concentrations of this plasma have condensed into stars and galaxies. Studies indicate that 90% of the mass in most galaxies is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Observations suggest that the majority of the mass-energy in the observable universe is a poorly understood vacuum energy of space, which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.

Discover Fun Facts