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The figure above shows: (a) an array of 3rd-order DFB lasers gold wire bonded to an electronic chip, (b) a photo of a fabricated array of DFB triplets, (c) scanning electron microscope image of a DFB device showing three periods, and (d) a schematic of a triplet with the corresponding radiation profile.

Advancing Local Terahertz Oscillators to Enable Cosmic Observations

Universe Sep 18, 2018
NASA is developing a new type of detector that will provide insight into the formation and structure of the universe. Many of the radiative and mechanical interactions that shape the interstellar...

NASA Hosts Science Chat on Upcoming Historic Planetary Encounter

Solar System Sep 17, 2018
Members of NASA’s New Horizons spacecraft team will host a Science Chat at 1 p.m. EDT Wednesday, Sept. 19, on humanity’s farthest planetary flyby, scheduled to occur Jan. 1 when the spacecraft...

NASA, ULA Launch Mission to Track Earth's Changing Ice

Earth Sep 15, 2018
NASA’s Ice, Cloud and land Elevation Satellite-2 (ICESat-2) successfully launched from California at 9:02 a.m. EDT Saturday, embarking on its mission to measure the ice of Earth’s frozen reaches...

NASA-funded ELFIN To Study How Electrons Get Lost

Sun Sep 14, 2018
The NASA-funded, UCLA built ELFIN Cubesat will launch on Sept 15, piggy-backing with NASA's ICESat-2, to study how electrons are lost from the Van Allen Belts.

NASA Astrophysics Eyes Big Science with Small Satellites

Universe Sep 12, 2018
NASA has selected nine proposals to study using small satellites, or SmallSats, for advanced astronomical space-based observations. The proposed SmallSat studies are a fraction of the size, weight,...

Nicola Fox Takes Helm as Director of NASA’s Heliophysics Division

Sun Sep 11, 2018
NASA’s Science Mission Directorate has selected Nicola Fox to be the next director of SMD’s Heliophysics Division. It is anticipated that Fox will join SMD in August of this year. Heliophysics...
Satellite data of precipitation, groundwater availability, land elevation and evapotranspiration

Where to Place a Rainwater Harvesting System

Earth Sep 10, 2018
On any given day, Zoubaida Salman instructs a classroom of 15-year-olds at the Sur Baher Girls School in East Jerusalem, where she has served as th

NASA’s SDO Spots 2 Lunar Transits in Space

Sun Sep 10, 2018
On Sept. 9, NASA's Solar Dynamics Observatory saw two lunar transits over the course of just six hours.
Cool Ways of Studying the Cryosphere Poster

Cool Ways of Studying the Cryosphere

Earth, Ice Sep 7, 2018
NASA missions are helping scientists study the cryosphere - the many forms of ice found on Earth.

NASA Television to Air Launch of Global Ice-Measuring Satellite

Earth Sep 4, 2018
NASA’s Ice, Cloud and land Elevation Satellite-2 (ICESat-2), a mission to measure the changing height of Earth's ice, is scheduled to launch Saturday, Sept. 15, with a 40-minute window opening at...