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Sciencespace

All articles tagged with #sciencespace

sciencespace12 days ago•12 min saved

NASA's Mars plan is an evolving architecture, not a fixed mission or date

NASA now treats its Moon-to-Mars architecture as a developing blueprint rather than a mission or flight manifest, which is why there is no official Mars landing date. Past targets from the 1980s and Europe’s 2033 Aurora plan were anchored in funding and politics, not just technology. Today, NASA narrows design options through annual reviews, while decisions on crew size, landing and ascent vehicles, power, propellant, and a return plan depend on developing and testing flight systems and on international/private partnerships.

via Space Daily|

#architecture #aurora #mars

sciencespace18 days ago•5 min saved

Swift Observatory Rescue Slips Toward Crisis as Commercial Grabber Spokesrisks Spins

NASA's mission to rescue the Swift Observatory is at risk after the LINK grabber, launched on a Pegasus XL, began spinning uncontrollably and has only sporadic communications. Ground teams are using electric propulsion to slow the spin and stabilize LINK so it can reattempt approaching Swift and boost its orbit, potentially by late August. A successful operation would mark the first commercial robotic capture of a government satellite and extend Swift's mission to study gamma-ray bursts for years.

via USA Today|

#katalyst-space #nasa #orbital-rescue

sciencespace1 month ago•11 min saved

Mercury’s permanently shadowed polar floors cradle water ice, revealed by MESSENGER data

Mercury’s cold polar crater floors hold water ice on permanently shadowed terrain, a conclusion supported by MESSENGER (2012) via radar-bright deposits, a hydrogen signal from neutron measurements, exposed versus buried ice seen in laser altimetry, and thermal models. Ice can be exposed in some areas and buried under a thin, dark cover in others; deposits may range from metres to tens of metres thick, and their age and origin remain topics of study, with delivery likely from comets/asteroids over hundreds of millions of years. The upcoming BepiColombo mission will map these regions in greater detail but will not land in the cold traps.

via Space Daily|

#mercury #messenger #polar-craters

sciencespace1 month ago•5 min saved

Dust, Not Just Rockets: Expert Casts Doubt on Musk's Mars Colony Plan

Astrophysicist Adam Becker warns that a self-sustaining Mars colony faces far more than travel challenges: toxic Martian dust would contaminate suits and habitats, and the planet lacks a thick atmosphere and magnetic shield. Add long transit times, radiation, low gravity, and huge logistical demands. Even with SpaceX’s pledge of $1 billion in shares for a 1-million-person colony, experts say the obstacles are severe and the goal would take far longer and be far harder than envisioned.

via Business Insider|

#elon-musk #mars #martian-dust

sciencespace1 month ago•4 min saved

Voyager 1 Reaches One-Light-Day Milestone After 50 Years

NASA's Voyager 1 is set to reach a distance of one light-day from Earth on November 18, 2026, making it the farthest human-made object as it continues its nearly 50-year journey; data still travels back to Earth with about a 23-hour delay, and the probe carries on with a small set of instruments while power wanes. Voyager 2, launched shortly before its twin, is also in interstellar space at about 21.3 billion miles from Earth, with some instruments powered down to conserve energy.

via bgr.com|

#interstellar-space #milestone #nasa

sciencespace1 month ago•14 min saved

Saturn's rings could be a recent addition to the planet

Cassini-era analyses suggest Saturn’s bright main rings may be tens to hundreds of millions of years old rather than billions, implying a relatively recent origin after much of the dinosaur era. While ring purity and mass measurements support a younger exposure age, newer studies caution that dust deposition, space weathering, and model assumptions keep the true age unsettled. Some scenarios even propose a collision or disruption of icy moons as the ring source. The rings are also losing material and evolving, so their future may include slow disappearance into Saturn, reinforcing that the exact formation time remains debated.

via Space Daily|

#cassini #dinosaur-era #exposure-age

sciencespace2 months ago•14 min saved

Space is just up there: Earth's air is an apple-skin-thin shield

A Space Daily explainer shows that the 100-kilometre Kármán line is a regulatory boundary, not a physical cliff; if you drove straight up at highway speed you’d reach space in under an hour, illustrating how incredibly thin Earth's breathable air is. About 99% of the atmosphere’s mass sits in the lowest ~32 km, and by 100 km altitude the air is roughly one millionth as dense as at sea level. The atmosphere’s layered protection—troposphere for life-supporting gases and the ozone-rich stratosphere—makes surface habitability possible, underscoring how the “apple-skin” thickness of the air is truly remarkable.

via Space Daily|

#atmosphere #earth #karman-line

sciencespace2 months ago•2 min saved

JWST Detects Methane on Interstellar Comet 3I/ATLAS, Revealing New Chemistry

NASA’s James Webb Space Telescope detected methane in the interstellar comet 3I/ATLAS using the MIRI instrument, marking the first direct methane fingerprint on an interstellar object; the methane-to-water ratio is unusually high and CO2 is also abundant, pointing to a different formation environment than typical solar system comets. Methane appears buried beneath the surface and released as the comet heats near the Sun, while water vapor dissociates more widely in the coma; two observations show gas production declining with distance from the Sun, with methane and CO2 concentrated near the nucleus.

via NASA Science (.gov)|

#3i-atlas #interstellar-comet #jwst

sciencespace2 months ago•29 min saved

Artemis III crew named for NASA's lunar return

NASA unveiled Artemis III's four-astronaut crew for a 2028 Moon landing: commander Randy Bresnik; mission specialists Frank Rubio and Andre Douglas; and ESA astronaut Luca Parmitano. The mission is among NASA's most complex and hinges on lunar lander work by SpaceX and Blue Origin, with new AxEMU suits in development. Notably, Artemis III will be a four-man crew, an all-male lineup amid ongoing discussions about funding and timelines.

via BBC|

#artemis-iii #astronauts #moon

sciencespace3 months ago•5 min saved

Landsat Lunar Checkups Keep Earth Data Accurate

NASA’s Landsat 9 regularly points its sensors at the Moon during the full Moon to detect and correct drift, using the Moon’s stability as a reference to keep decades of Earth observations consistent, a process that runs alongside Artemis’ return to lunar exploration.

via NASA Science (.gov)|

#artemis-program #earth-observation #landsat-9

sciencespace3 months ago•2 min saved

China Tests Stem-Cell Embryos in Orbit to Assess Space Reproduction Feasibility

China conducted an on-orbit study aboard the Tiangong station using artificial embryos made from human stem cells to examine early development in microgravity. The two embryo models (one simulating uterine attachment and another using a microfluidic chip to mimic tissue formation) were cultured for about five days on the Tianzhou-10 supply ship, then frozen and returned to Earth for analysis, with Earth-based controls for comparison. The goal is to understand potential risks to human reproduction during long-term space habitation, not to create real babies in space.

via Gizmodo|

#biology #china #reproduction

sciencespace3 months ago•4 min saved

SpaceX targets May 19 for first Starship Version 3 flight

SpaceX announced May 19 as the target date for the first flight of Starship Version 3 from Starbase, Texas, featuring upgraded Raptor engines and a new launch pad. The Flight 12 test will validate the redesigned booster and upper stage, including a soft splashdown for the booster, 22 mass simulators to model next-generation Starlink satellites, imagery payloads to test heat shield readiness, and reentry maneuvers as SpaceX pursues full reuse for orbital missions and potential Artemis lunar missions. SpaceX is also exploring additional launch sites (including a Louisiana parcel) to support thousands of Starship flights per year, alongside pads at Kennedy Space Center and Cape Canaveral.

via SpaceNews|

#launch #nasaartemis #sciencespace

sciencespace3 months ago•4 min saved

Global pact for planetary defence as Ramses targets Apophis

ESA and JAXA signed memoranda to deepen planetary-defence collaboration and advance the Ramses mission to rendezvous with asteroid Apophis ahead of its 2029 Earth flyby, with ESA leading spacecraft design and JAXA contributing key hardware to study tidal effects and improve deflection knowledge; the 2029 flyby will bring Apophis within about 32,000 km of Earth, presenting a rare science and public-engagement opportunity.

via European Space Agency|

#apophis #esa-jaxa-collaboration #near-earth-objects

sciencespace4 months ago•4 min saved

Martian Nickel Clue: Perseverance Uncovers 3-Billion-Year-Old Rocks with Rare Mineral Signatures

NASA’s Perseverance rover found unusually high nickel levels (up to 1.1% by weight) in rocks from Neretva Vallis in Jezero crater, dating about 3 billion years, with nickel‑rich minerals in magnesium‑sulfate veins that resemble Earth’s pyrite. While this hints at a chemical environment that could support microbial processes, it does not prove life on Mars; the nickel’s origin is uncertain and requires further study.

via The Daily Galaxy|

#jezero-crater #mars #microbial-life

sciencespace5 months ago•3 min saved

Rare Fireball Dazzles California Skies, SLO County Among Sightings

A rare fireball lit up California skies Sunday night, with San Luis Obispo County observers among those viewing the event. NASA Space Alerts tracked the meteor as it sped about 35,000 mph, traveling roughly 58 miles through the upper atmosphere before disintegrating about 29 miles above Calflax. The American Meteor Society logged more than 230 sightings across California, Arizona and Nevada, with witnesses reporting colors from blue to orange and, in some places, a faint boom accompanying the event.

via San Luis Obispo Tribune|

#california #meteor #nasa