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The Frantic Determination of Some Scientists to Discover Life Elsewhere

We often hear exciting news about 'habitable planets' that might have life, or at least the 'building blocks of life.' Are these reports based on sound thinking about the requirements?

JPL Honors Explorer 1 Manager on 60th Anniversary *

Dr Henry Richter, who has contributed articles to CEH, is a VIP at NASA's 60th Anniversary celebration of America's first satellite. *Audio version included.

Video: An Interview with Dr Henry Richter

Rocket scientist Henry Richter describes how he got interested in the requirements for life on "Spacecraft Earth."

New Guidebook for Earthlings Published

A new book by two CEH authors can help readers understand their spacecraft and its mission. Dr Henry Richter, distinguished NASA scientist, former Caltech professor and inventor, the last surviving manager of Explorer 1 (January 31, 1958), has a new book worth sharing. Its title appeals to all readers on the planet: Spacecraft Earth: A […]

Rocket Scientist Recalls Sputnik 60 Years Ago

Dr Henry Richter, a writer for CEH and NASA VIP, shares his recollections of the space race that began in earnest with Sputnik 60 years ago.
Earthrise 2015 LRO

Your Mind Can Space Out, But Your Body Belongs on Earth

Through the imagination, we can soar through distant galaxies. Sooner or later, physical reality hits home.

Thank Van Allen's Belts and Richter's Rockets

Invisible shields above the Earth protect us all from dangerous radiation. New space probes explore how they do it.

Rosetta's Philae: ESA Lands Probe on Comet

Another space first: the European Space Agency's Rosetta mission landed its Philae probe on a comet this morning, but will it stick?
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