rocket science

thorsbiceps replied to your post “Funny how you are complaining that people reblog their own stuff. You…”

go find something productive to do anon you’re not doing yourself any favors by misinterpreting people’s words and sending them rude messages

I’ll just leave this here :)

Annie Easley helped make modern spaceflight possible

“Few people are brilliant enough to be a computer programmer or a mathematician. Even fewer can add "rocket scientist for NASA” to their resume. Annie Easley, however, was all three. During her 34-year career, she worked not only on technologies that led to hybrid vehicles, but also on software that enabled great strides in spaceflight and exploration. And if that wasn’t notable enough, Easley also did all of this as one of the first few African-Americans in her field.“

Hohmann Transfer Orbit

If you were on an orbiting spacecraft, and wished to move to a higher orbit (further from Earth), the easiest way would be to use the Hohmann Transfer Orbit. A type of elliptical transfer orbit, two specific boosts of thrust can be utilized to move to a higher orbit. 

The above diagram shows a Hohmann transfer orbit, and it shows a spacecraft leaving the initial orbit (labeled 1) and going to a higher circular orbit (labeled 3). 2 on the diagram, known as the transfer orbit, can be reached by boosting the engine and accelerating - this adds energy to the orbit. When is reaches the destination orbit, 2, and maintains it - the boosters must be turned on again in order to change up to 3. These two boosts save much more fuel than a single large burst (in fact, about 141% less fuel is used with the Hohmann Transfer Orbit.)