A Burning Candle In Zero-Gravity
The results of a Burning and Suppression of Solids (BASS) experiment demonstrates that in zero-gravity—where heat doesn’t rise—a flame burns in a uniform oval.
Credit: Col. Chris Hadfield
Our moon looks pretty festive in this image. That’s because it’s actually a map of the moon’s gravity, based on data gathered by NASA’s Gravity Recovery and Interior Laboratory mission, or GRAIL. And by showing us how the moon’s gravity changes, it also shows the orb’s mass and density, revealing impact marks and the thickness of the crust.
But how did the mission’s twin probes measure the moon’s gravity field in the first place?
“The map was created by the spacecraft transmitting radio signals to define precisely the distance between them as they orbit the moon in formation. As they fly over areas of greater and lesser gravity caused by visible features, such as mountains and craters, and masses hidden beneath the lunar surface, the distance between the two spacecraft will change slightly.”
You can read more about the map and the GRAIL mission at NASA’s website.
Image courtesy of NASA/JPL-Caltech/MIT/GSFC
FORCES OF NATURE by karaniwangbinatilyo
Check out Rex’s blog. =))
I have always wondered…Because you were wondering, you know you were.
(via Coudal)
Anyone else remember going to a science museum as a kid and being weight on the “space” scales? Was that Liberty Science Center? Man, that was great.
We lookin’ good on Mars.
The surprising physics of a falling slinky. Can you predict what will happen when a dangling slinky drops?
Via 1veritasium on YouTube
What is a Gnome Doing at the Large Hadron Collider?
Meet Kern, the globe-traveling gnome. Here he is in one of the LHC’s tunnels. Why? Are gnomes the secret to unlocking neutrinos?
Kern is a project of Kern Precision Scales, a company that makes … you guessed it: Precision scales. See, gravity is slightly different at different places on the Earth’s surface, which is where lumpy-Earth maps like this come from. That means you’d weigh slightly more or less at different spots on Earth.
Kern the Gnome gets shipped all over the Earth where he is unpacked, weighed, photographed and finally sent to his next destination. He was heaviest at the South Pole, weighing 309.82 grams compared to Geneva’s 307.65 grams.
Follow Kern’s travels on his Tumblr, or track him on Twitter or the project blog.
oh science, you crazy