Radioisotope power systems provide the efficient, long-lasting power sources vital to the success of numerous NASA space missions. NASA SMD is sponsoring technology development efforts to improve Radioisotope Thermoelectric Generator (RTG) performance, both in terms of the thermal-to-electric conversion efficiency (~ 6.3% at beginning of life - BOL) and the degradation rate during the 17-year design life.
On the evening of March 18, step outside for a view of the crescent Moon, Venus, and Mercury together above the twilight horizon.
NASA has powered on its latest space payload to continue long-term measurements of the Sun's incoming energy. Total and Spectral solar Irradiance Sensor (TSIS-1), installed on the International Space Station, became fully operational with all instruments collecting science data as of this March.
Next year marks the 20th anniversary of NASA’s Chandra X-ray Observatory launch into space. The Crab Nebula was one of the first objects that Chandra examined with its sharp X-ray vision, and it has been a frequent target of the telescope ever since.
Scientists are learning more about combustion through a series of experiments on the International Space Station.
Astronomers have put NASA's Hubble Space Telescope on an Indiana Jones-type quest to uncover an ancient "relic galaxy" in our own cosmic backyard. The very rare and odd assemblage of stars has remained essentially unchanged for the past 10 billion years. This wayward stellar island provides valuable new insights into the origin and evolution of galaxies billions of years ago.
NASA satellites are helping Wisconsin develop a clearer picture of its diverse and abundant fauna. Through a partnership project called Snapshot Wisconsin, scientists and managers are focusing on better wildlife management by linking spaceborne views with keen eyes on the ground.