Atmospheric propagation errors are a main constraint on the accuracy of very-long-baseline-interferometry astrometry. For relative astrometry, differential techniques can mitigate these errors, but their effectiveness diminishes with decreasing…
Category: 2. Space
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Serial MultiView: An Efficient Approach to Mitigating Atmospheric Spatial-structure Errors for Very-long-baseline-interferometry Astrometry
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Golden Dome: It’s all about the data
WASHINGTON — From what is known so far about the Trump administration’s missile defense initiative known as Golden Dome, its backbone will be space-based sensors. But some of the most critical and hotly contested contracts may come…
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South Korea’s Venus-focused cubesat advances as larger missions face NASA cuts
TAMPA, Fla. — South Korea’s state-backed Institute for Basic Science (IBS) has ordered the first of five cubesats to study Venus from low Earth orbit (LEO) starting next year, bolstering sustained planetary research as flagship…
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Webb reveals the origin of the ultra-hot exoplanet WASP-121b
Observations with the James Webb Space Telescope (JWST) have provided new clues about how the exoplanet WASP-121b has formed and where it might have originated in the disc of gas and dust around its star. These insights stem from the detection of…
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Webb Detects Silicon Monoxide in Atmosphere of Ultrahot Jupiter WASP-121b
Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected water, carbon monoxide, and silicon monoxide in the dayside atmosphere of WASP-121b and methane in the planet’s nightside atmosphere. This is the first and only time…
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Janet Petro Wants You All To Be Happy
Keith’s note: Janet Petro is a master in the art of not reading the room. Massive budget cuts, draconian personal layoffs, well-liked Administrator nominee bounced for intra-White House political food fights – and yet its all ‘Don’t Worry – Be…
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NASA Spaceline Current Awareness List #1,151 30 May 2025 (Space Life Science Research Results)
Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams,…
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OMB Invents A Ponzi Hiring Scheme
Keith’s note: How do NASA and other agencies hire at the same time they’re RIFing their workforce to reduce head count? Are these replacement hires? Where do empty slots come from when reducing a workforce? Can you get RIFed and walk out of NASA…
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A Star Like No Other
An unusual star (circled in white at right) behaving like no other seen before and its surroundings are featured in this composite image released on May 28, 2025. A team of astronomers combined data from NASA’s Chandra X-ray Observatory and…
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EchoStar bets on TV amid FCC mobile scrutiny
TAMPA, Fla. — EchoStar has ordered another geostationary satellite for its Dish Network TV broadcast business, even as the company signals the possibility of seeking bankruptcy protection amid a regulatory probe into its spectrum…
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