News tagged with earth

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50 years of Mars observations

(Phys.org) —In 1964, Caltech astronomy professor Guido Münch and Jet Propulsion Laboratory space scientists Lewis Kaplan and Hyron Spinrad pushed the world's second-largest telescope to its limits and ...

May 08, 2014
4.3 / 5 (4) 1

NASA image: Earth's atmospheric layers

International Space Station astronauts captured this photo of Earth's atmospheric layers on July 31, 2011, revealing the troposphere (orange-red), stratosphere and above. Satellite instruments allow scientists ...

May 07, 2014
4 / 5 (3) 0

Recycling the next generation

About 70 billion tons of raw materials are extracted world wide annually. That is twice as much as at the end of the 1970s. This trend is continuing – even with finite resources. One way to have enough ...

May 01, 2014
3.7 / 5 (3) 1

Video: An orbital look back at Earth in 2013

(Phys.org) —A fleet of orbiting satellites monitors Earth constantly. The satellites from NASA and other space agencies give us a fresh, wide perspective on things that we can see from the ground – and ...

Apr 30, 2014
5 / 5 (2) 0