La Nuite De L'homme

1.5M ratings
277k ratings

See, that’s what the app is perfect for.

Sounds perfect Wahhhh, I don’t wanna
sci-universe
sci-universe

From Earth vs From Space

It’s already been a year since the European Space Agency’s Rosetta mission spacecraft made its historic landing on the surface of Comet 67P/Churyumov-Gerasimenko on 12 November 2014. 

The observations made by the Rosetta orbiter and Philae lander are reshaping researchers’ ideas about comets.
Notably, the isotopic signature of water vapour from comet 67P was discovered to be substantially different from that found on Earth. That is, the ratio of heavy water to normal water there is more than three times that on Earth. This makes it very unlikely that water found on Earth came from comets such as comet 67P. ESA also provided evidence for a daily water-ice cycle on and near the surface of comets.
Another highlight was the detection of high levels of molecular oxygen - familiar on Earth but not on a comet. You can see more about their year of research here

Above, you can see the difference of vantage points: a telescopic image of Comet 67P captured from Earth versus the view from Rosetta’s NAVCAM 127 km (79 miles) from the comet, both taken recently.

Credits: Damian Peach, ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0