All articles
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Commercial
America's First In-Orbit Mechanic Is on Its Way to GEO
A Falcon 9 launched Northrop Grumman's Mission Robotic Vehicle on 21 July 2026, carrying DARPA/NRL's RSGS robotic arms to geosynchronous orbit to inspect, repair, relocate and life-extend aging satellites.
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Science & Discovery
The Sun's Sudden 'Switch-Off': A Hidden Signal That Forecasts the Next Solar Cycle Years in Advance
University of Warwick physicist Sandra Chapman told NAM 2026 that the Sun's fiercest space weather ends not with a whimper but a sudden 'switch-off' - and the sunspots left behind at that moment forecast the next cycle six to seven years early.
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Stargazing
This Week's Sky: An Apollo-11 Twin Moon, a Stalling Mercury, and Titan Circling Saturn (July 20-24)
From July 20-24, 2026, the Metonic cycle serves up a Moon that echoes Apollo 11's landing night, Mercury stalls to end its retrograde in Gemini, and Titan hangs easily beside Saturn.
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Science & Discovery
A Fresh Sunspot and an Incoming Coronal-Hole Wind Set Up a G1 Aurora Window for July 21-22
New sunspot AR4493 fired an M3.4 flare and 17 others in 24 hours as a fast coronal-hole wind stream heads for Earth, setting up a G1 geomagnetic storm and aurora chances July 21-22.
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Astronomy
Van Gogh in the Sky: How the Dark Energy Camera Painted the Nearest Stellar Nursery
NSF NOIRLab's Dark Energy Camera has captured a 570-megapixel mosaic of the Corona Australis Molecular Cloud, the closest active star-forming region to the Sun, with dust lanes so swirling that astronomers reached for Van Gogh's 'The Starry Night' to describe it.
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Commercial
America's First Robotic Satellite Mechanic Reaches the Pad
A Falcon 9 is set to launch Northrop Grumman's MRV-1 and three Mission Extension Pods on July 21, carrying DARPA's RSGS payload — the first U.S. multi-mission robot built to inspect, repair, upgrade, relocate and refuel satellites in geosynchronous orbit.
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Military Space
SDA's Mesh Grows: Third Tranche 1 Launch Puts 21 York Satellites in Orbit — and All 21 Phone Home
A July 16 Falcon 9 lofted 21 York-built data-transport satellites for the Space Development Agency, resuming Tranche 1 flights after a roughly nine-month pause — and York confirmed contact with all 21 within hours, pushing the on-orbit count to 63.
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NASA & Agencies
Mauritius Signs the Artemis Accords, and Talks About the Ocean Instead of the Moon
Mauritius became the 70th Artemis Accords signatory on July 17, 2026 — the seventh African nation and the 11th country to sign this year — and framed its accession around protecting oceans and coastlines rather than lunar exploration.
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Science & Discovery
Nickel Isotopes Finally Name the Rock That Killed the Dinosaurs — and It's an Oddball
Nickel isotopes in K–Pg boundary clay identify the Chicxulub impactor as a rare CO chondrite — so poor in sulfur, carbon and water that atmospheric debris, not impactor sulfur, likely drove the extinction.
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Military Space
The Space Force Just Tripled Its Commercial Launch Contract Ceiling to $17 Billion
The Space Force tripled its NSSL Phase 3 Lane 1 ceiling to $17 billion across seven launch providers on July 17, 2026 — but a GAO report showing commercial launches at federal ranges have more than quadrupled since 2021 suggests the real bottleneck isn't rockets, it's the ground beneath them.
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Astronomy
The Case of the Sun's Missing Silver Is Closed — the Model Was Wrong, Not the Sun
Uppsala researchers found the Sun holds 55% more silver than the reference value — not from new observations, but from a 3D non-LTE model that finally accounts for the photosphere's turbulence, closing a decades-old gap with meteorites from 0.25 dex to 0.06.
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Science & Discovery
Webb's Next Target Just Got Interesting: A Rocky Habitable-Zone World Is Leaking Helium
A Science paper reports the first atmosphere detected on a rocky, habitable-zone exoplanet: helium is escaping the super-Earth LHS 1140b. The signal was time-variable — seen in 2024, gone in 2025 — hinting at an active, replenishing atmosphere.
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