Gravity is such a constant it's easy to forget how much it shapes our experience. Randall Munroe, creator of the webcomic XKCD took this as a challenge. With a straightforward illustration, he compares the relative “depth” of various solar system gravity wells. Each well is drawn in such a way that it represents the relative amount of energy it would take to escape from that planet or celestial body's gravitational pull.

Gravity Wells infographic, courtesy of Randall Munroe's brilliant science webcomic XKCD.

Q: How does the Oberth Effect work, and where does the extra energy come from?  Why is it better for a rocket to fire at the lowest point in its orbit? | Ask a Mathematician / Ask a Physicist

Physicist: When a rocket fires it increases its speed by some fixed amount called the “ΔV” (delta V). If the original speed is W, and the rocket speeds up by ΔV, then the change in ene…

The Oberth Effect  - Kerbal Science (KSP)

This episode demonstrates and explains 'The Oberth Effect' and the extra efficiencies you can gain from doing some of your burns at the highest possible velo.

Delta-v budget - Wikipedia, the free encyclopedia - Delta-v needed for various orbital manoeuvers using conventional rockets.[7] See:[10][11] Red arrows show where optional aerobraking can be performed in that particular direction, black numbers give delta-v in km/s that apply in either direction. Lower-delta-v transfers than shown can often be achieved, but involve rare transfer windows or take significantly longer, see: fuzzy orbital transfers. Electric propulsion vehicles going from Mars…

A diagram showing the stair-step energy needed to travel to places beyond the Earth. Delta-V is the velocity in km/sec to reach a destination. The Delta-Vs a accumulative. (Credit: Wikipedia, Delta-V)

How to win Rock-paper-scissors every time…

How to win Rock-paper-scissors every time…

Funny pictures about How to win Rock-paper-scissors every time. Oh, and cool pics about How to win Rock-paper-scissors every time. Also, How to win Rock-paper-scissors every time.

I can't even imagine technology five years from now.

I Waste So Much Time

Space solar system meme - Funny and True! We got to the moon with a computer less powerful than your cell phone!

Sonumuz Nasıl ve Ne Zaman Gelecek? – Evrim Ağacı

Here’s everything that could wipe out humanity ranked in one handy infographic Simply refer to this chart next time you're panicking about Ebola.

Exploding Skateboard Wheels With Waterjet

Exploding Skateboard Wheels With Waterjet - Gif Finder - Find and Share funny animated gifs