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Space News from SpaceDaily.Com brings the space industry professional daily news from the frontier, with contract, bid, launch and on-orbit satellite news as it happens.
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Known physics suggests the early universe should have produced matter and antimatter in equal amounts. Nearly all of it annihilated into radiation, but roughly one extra matter particle survived for every billion pairs—and why that tiny imbalance existed remains one of physics’ deepest unsolved problems.
1+ day, 12+ hour ago (906+ words) The measured net baryon-to-photon ratio is about 6.1 parts in ten billion. Physics can describe the required ingredients for that excess, but no confirmed mechanism made it....
Olympus Mons grew so massive that parts of its lower flanks catastrophically collapsed, sending broken rock sliding hundreds of kilometres across the Martian plains—possibly lubricated when hot lava melted buried ice.
4+ day, 18+ hour ago (718+ words) Orbital evidence links Olympus Mons's aureole to immense flank failures. Water or ice may explain the long runout, but lava-driven melting remains one proposed mechanism....
Astronomers long expected the Milky Way and Andromeda to collide in about 4.5 billion years — but a 2025 study in Nature Astronomy, using Hubble and Gaia data, estimated only a roughly 50–50 chance of the galaxies merging within the next 10 billion years.
1+ week, 10+ hour ago (810+ words) The 2025 estimate depended on uncertain motions and neighbouring galaxies. A 2026 follow-up put the merger probability higher, showing why the forecast remains sensitive to the measurements. By Deep Field · Edited by Lachlan Brown Published September 7, 2026 · How we edit The Milky Way’s…...
Despite being only about half Earth’s diameter, Mars has nearly as much total surface area as all of Earth’s continents combined—the difference is that oceans cover 71% of our planet, while modern Mars has no permanent bodies of liquid water.
1+ week, 1+ day ago (980+ words) Mars has about 97% as much surface area as Earth’s dry land, a geometrical coincidence created by the oceans covering most of the larger planet....
By the age of eight, a girl in northeastern Brazil was working through sky-survey images on two computer screens and had logged 18 preliminary asteroid detections; if confirmed, they would make her younger than Luigi Sannino, who was 18 when he set the r
1+ week, 2+ day ago (592+ words) A Brazilian girl's methodical scan of deep-space data threatens to upend a record that's stood for a quarter century, raising questions about who gets access to the tools of discovery. By The Daily Orbit · Edited by Mal James Published September…...
For 21 years, millions of volunteers let UC Berkeley use their home computers to search the sky for alien signals, producing 12 billion detections — after a decade of filtering, scientists narrowed them to roughly 100 targets worth a second look.
2+ week, 22+ hour ago (1591+ words) SETI@home’s 12 billion threshold events became roughly 100 FAST follow-up targets after interference filtering, blind synthetic-signal tests and manual review. By Deep Field · Edited by Lachlan Brown Published August 30, 2026 · How we edit For 21 years, a global network of ordinary computers performed…...
Deimos may owe both its enormous south-polar depression and strangely smooth surface to a single 300-metre asteroid impact — a blow whose debris spread around the entire moon and would mean Mars’s smaller satellite is essentially a porous rubble pile
2+ week, 6+ day ago (1186+ words) A 320-metre oblique impact can reproduce Deimos's giant polar cavity while redistributing debris across the moon, implying an extremely weak and porous interior....
Astronomers have measured a Saturn-mass object apparently drifting through the Milky Way without a star—and microlensing surveys suggest that unseen free-floating worlds may outnumber the galaxy’s stars, perhaps by as much as 20 to one.
3+ week, 1+ hour ago (786+ words) A directly weighed Saturn-mass lens strengthens the free-floating planet case, but the estimate of roughly 20 such worlds per star remains a broad, model-dependent population inference....
The Moon is rusting even though it has no air and almost no liquid water — and the leading explanation is that oxygen escaping Earth rides our magnetic tail 385,000 kilometres into space during the few days each month when the solar wind is blocked
3+ week, 3+ day ago (687+ words) Chandrayaan-1 found hematite near the lunar poles. Orbital patterns and laboratory tests point to oxygen ions escaping Earth and reaching the Moon through our magnetotail....
Mars may hold enough liquid water to cover the entire planet to a depth of 1 to 2 kilometres — trapped in tiny cracks and pores in rock roughly 11.5 to 20 kilometres underground, far beyond anything we've ever been capable of drilling on Mars.
3+ week, 3+ day ago (706+ words) InSight data can be modelled as water-saturated rock deep beneath Mars, but a 2026 reanalysis shows the planet-wide estimate remains highly sensitive to assumptions about the unseen crust. By Deep Field · Edited by Lachlan Brown Published August 20, 2026 · How we edit Mars…...