The Universe is a beautiful and mysterious place full of wonder:
The Galaxy is a beautiful and mysterious place full of wonder: images via nasa
It’s today <3
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krolia: h
lance: so his hair is your fault
Falcon Heavy Demo Mission | SpaceX
Keith: There has to be some word for this feeling, “look, I don’t disagree with you, but you’re being such a smug bastard that I want to hit you anyways”
Pidge: Waltersobchakeit, it’s German. It basically means “you’re not wrong, you’re just an asshole”
Keith: What a wonderful language… Hey Lance-
A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star. The protoplanetary disk may also be considered an accretion disk for the star itself, because gases or other material may be falling from the inner edge of the disk onto the surface of the star. This process should not be confused with the accretion process thought to build up the planets themselves. Externally illuminated photo-evaporating protoplanetary disks are called proplyds.
The nebular hypothesis of solar system formation describes how protoplanetary disks are thought to evolve into planetary systems. Electrostatic and gravitational interactions may cause the dust and ice grains in the disk to accrete into planetesimals. This process competes against the stellar wind, which drives the gas out of the system, and gravity (accretion), which pulls material into the central T Tauri star.
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Image credit: NASA/JPL, ESO
Bones: All in all, a 100% successful mission.
Kirk: We lost Spock!
Bones: All in all, a 100% successful mission.