Tweet by Astronaut Terry Virts, who returned to Earth a few days after 200 days on the International Space Station: "It took me until my last day in space to get a good picture of these!" Read the rest
Here's a newly-released video animation of dwarf planet Ceres, based on images taken by NASA's Dawn spacecraft, that provides “dramatic flyover views of this heavily cratered, mysterious world.” Read the rest
Conspiracy theorists are claiming that the two shiny spots on Ceres seen in photos taken by NASA's Dawn spacecraft are either ice or salt patches. Read the rest
Right now, it's cold in the Arctic. Days are dark, and ice grows to cover the dark sea. Come summer, lengthening days and warming temperatures will reverse that process. This is the ebb and flow of the Arctic, a natural cycle.
However, over the past several decades we have seen summers melt more and more of the ice that forms during the cold winter months. As a result, more and more dark seawater is exposed to the light of day.
NASA researchers, using several instruments on three separate satellites, has been collecting data for 15 years to find out why the ice is melting, and to be able to predict trends in future ice formation and melting. They reported on this data at the 2014 American Geophysical Union annual meeting, saying that 15 years worth is the absolute minimum amount of information needed for them to begin making long-term predictions. Climate trends, as opposed to weather trends, are averaged over 30 years, so they are about halfway there at this point in time.
The project to observe the Arctic is part of NASA's Clouds and the Earths Radiant Energy Systems (CERES) mission. They measure the Earth's reflected solar radiation, emitted thermal infrared radiation, and all emitted and reflected radiation.
The results so far indicate that the Arctic is absorbing energy from the sun five percent faster now during the summer months than it was when they first began monitoring in 2000. This is important because the rest of the Earth is still absorbing energy at pretty much the same rate. Read the rest
The first space-bound Orion capsule has arrived at a NASA Kennedy Space Center launch pad. Read the rest
In this spectacular image released this week, an older galaxy ignites with an outer ring of stellar life.