#astrodynamics

[veryluckyclovers]

[stone-cold-groove]

Skylab in low Earth orbit - 1973.

[h2rtkos]

Why You Cannot Launch Things (Easily) Into the Sun! Ft: Me Taking 18 Years to Get to the Point

[histonics]

[astronauticalaspirations]

Spacecraft generally don’t stay in lunar orbit because the gravity field is so nasty, but this paper suggests that the Apollo 11 ascent stage still may be up there, based on the orbital data we have. Scott Manley walks us through it.

[ahiijny]

When I got to this part of the episode, I was thinking, ‘Wow, the astronomy community’s going to be a mess after this...’

Humans have this really complicated system of inserting leap days (once every 4 years except it’s a multiple of 100 unless again if it’s a multiple 400 years) just because the Earth takes like a quarter of a day longer than 365 days to go around the Sun.

And we insert an extra leap second every couple of years or so just because the Earth takes like 2 milliseconds longer than 86400 seconds to spin on its axis.

But Shem-ha doesn’t care about any of that at all because she wants her lunar eclipse now :P

[outer-space-youtube]

Going to the Moon?

Getting to the Moon is a lot of first steps, but isn’t getting there half the fun, or is it most of the work..? For the Lunar Economy to work, we first need the infrastructure and contractual laws of use to be agreed upon. This interview with Dr. Aaron Rosengren explains the astrodynamics of cislunar and translunar space. The Astrodynamics Primer on Cislunar and Translunar Spacea detailed…

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[happybondbooks]

Some notebooks hold notes. Others hold missions. http://amazon.com/dp/B0H4Q7C13Y #OrbitalMechanics #AerospaceEngineering #Astrodynamics #SpaceEngineering #STEM #GraphPaper #HohmannTransfer #graph