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By Marcia J. Rieke The development of infrared detector arrays is intertwined with my experiences working on NASA projects. As an astronomer at a university, my interactions with NASA all start with a proposal in response to an opportunity. In 1983, near-infrared detector arrays were beginning to attract the attention of astronomers. At the suggestion […]

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By Nancy Grace Roman Looking through the atmosphere is like looking through a piece of old stained glass. The glass has defects that distort the image. The atmosphere also has defects that distort the image, but the defects in the atmosphere move, thus blurring the image as well. The glass is colored, so only some […]

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Looking at Chlorophyll from Space By Compton “Jim” Tucker NASA scientists are able to study plants from space, but this wasn’t always the case. “I love using satellite data to study the Earth,” says Dr. Compton “Jim” Tucker. When Tucker was a graduate student, he and some friends discovered a new way to study photosynthesis. […]

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By Laura Rocchio On July 23, 1972 the first civilian satellite designed to image Earth’s land surfaces was launched from Vandenberg Air Force Base in California. On board the satellite, originally named the Earth Resources Technology Satellite (ERTS), but later known as Landsat 1, were two sensors. The primary sensor, called the Return Beam Vidicon […]

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By Denise Lineberry On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a cosmic ray detector, was designed to measure the radiation environment in Earth orbit. Though its final transmission was in May 1958, it continued to revolve around Earth more than 58,000 times. As […]

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By Hashima Hasan How did a little girl born in India soon after its independence from the British Empire, become a program scientist for NASA’s Hubble Space Telescope, and the first female program scientist for the James Webb Space Telescope, Stratospheric Observatory for Infrared Astronomy (SOFIA), Gravity Probe B, and other astrophysics flight missions? The […]

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By John Mather The Cosmic Background Explorer satellite (COBE) went up on a Delta rocket on Nov. 18, 1989, into a polar sun-synchronous orbit 900 km up. Our team at NASA Goddard Space Flight Center (GSFC), Ball Aerospace, the Jet Propulsion Laboratory (JPL) and universities built it to look at the cosmic microwave and infrared […]

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As NASA continues preparations for the Artemis II test flight, the agency will provide coverage Thursday, Feb. 19, of its next wet dress rehearsal, a fueling test of the SLS (Space Launch System) rocket, and hold a news conference on Friday, Feb. 20. Teams are counting down to the opening of a simulated launch window at 8:30 p.m. EST on Feb. […]

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Commodity Classic, February 25 – 27, 2026 Join NASA in the Exhibit Hall (Booth #3481) for Hyperwall Storytelling by NASA experts. Full Hyperwall Agenda below. WEDNESDAY, FEBRUARY 25 4:30 – 4:50 PMNASA: Your Space and Science AgencyKaren St Germain THURSDAY, FEBRUARY 26 11:00 – 11:20 AMInforming Water and Agricultural Management Apps with NASA Modeling and […]

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There is no GPS at the Red Planet, but a new technology called Mars Global Localization lets Perseverance determine precisely where it is — without human help.  Imagine you’re all alone, driving along in a rocky, unforgiving desert with no roads, no map, no GPS, and no more than one phone call a day for someone to inform you exactly where you are. That’s what NASA’s Perseverance rover has been experiencing since landing on Mars five years ago. Though it carries time-tested tools for determining its general location, the rover has needed operators on Earth to tell it precisely where it is — until now.   A new […]