Sunglint on Atlantic Ocean
NASA Sunlight beams off a partly cloudy Atlantic Ocean just after sunrise as the International Space Station orbited 263 miles above on March 5, 2025. This is an example of…
NASA, JAXA to Cover HTV-X1 Spacecraft Departure from Space Station
The new HTV‑X1 cargo spacecraft from JAXA (Japan Aerospace Exploration Agency), carrying science, supplies, and hardware for NASA and its international partners, is pictured on Oct. 29, 2025, after its…
How to Weigh a Killer Asteroid at 22 Kilometers per Second
Estimating a mass for a potentially hazardous asteroid (PHA) is perhaps the single most important thing to understand about it, after its trajectory. Actually doing so isn’t easy though, as…
Stargazing into the future of SSA
SpaceX has disrupted the launch business with the Falcon 9 and the satellite communications business with Starlink. Now it may be taking aim at the emerging space situational awareness (SSA)…
Pentagon details cyber, space ‘first mover’ role in Iran operations
U.S. Cyber Command and U.S. Space Command have ‘continuously layered effects to disrupt, disorient and confuse the enemy’ The post Pentagon details cyber, space ‘first mover’ role in Iran operations…
Hardware is no longer the problem holding back space-based data centers — the supply chain is
Orbital and lunar data centers are often framed as engineering challenges or launch economics problems. Those matter, but they are not the limiting factor. The real bottleneck is the absence…
Predicting the Sun’s Most Violent Outbursts
In the first four days of February this year the Sun unleashed six powerful X-class flares in rapid succession including an X8.1 that was the strongest in several years. And…
Scoria Cones on Earth and Mars
Earth Observatory Science Earth Observatory Scoria Cones on Earth and Mars Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on…
NASA outlines objectives for Mars communications orbiter
NASA has provided new details about its plans to procure a Mars communications orbiter funded under last year’s budget reconciliation bill as companies continue positioning themselves to bid on it.…
Laser-Based 3D Printing Could Build Future Bases on the Moon
Simulated lunar dirt can be turned into extremely durable structures, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests. Using a special laser 3D…