All articles tagged with #space science
Far-side Moon rocks imply a gradual decline of asteroid impacts over billions of years, not a single catastrophic bombardment, challenging the late heavy bombardment theory and offering a cleaner record of early Solar System history that informs Earth's ancient environment, aided by China’s Chang’e‑6 samples.
New analysis using NASA's MAVEN and ESA's Trace Gas Orbiter data suggests solar energetic particle events can heat Mars’ lower atmosphere, and when these events coincide with global dust storms they may intensify the storms. The heating was clearly observed in a June 2018 SEP event during a dust storm (about 50°C at 75–125 km), while a July 2021 event showed a smaller effect; results are not yet conclusive and more data—such as from the 2024 solar storm—are needed to confirm the phenomenon. Opportunity’s demise after a dust storm is mentioned as context for Mars’ weather sensitivity, but the core finding is the potential for multiple solar and atmospheric events to interact and alter Martian weather.
A teaspoon of neutron-star matter weighs about four billion tonnes because gravity compresses more mass than the Sun into a city-sized sphere. The article explains how neutron stars form from collapsed stellar cores, the role of neutron degeneracy pressure in stopping collapse, their extreme surface gravity and magnetic fields, and how mergers like GW170817 forge heavy elements such as gold. It also touches on interior models and how neutron stars might help probe dark matter, while noting how the “teaspoon” analogy distills the star’s extreme density into a tangible image.
A high-energy neutrino detected by IceCube may have originated from Shadow Blaster, a dust-enshrouded, intensely star-forming galaxy 11 billion light-years away that is gravitationally lensed. This link, while tentative (about 1% chance of a random coincidence), suggests star-forming galaxies could contribute a significant fraction of the diffuse neutrino background, and motivates deeper multiwavelength follow-up with facilities like ALMA and JWST to pinpoint more such sources.
Analysis of Martian rock Cheyava Falls by Perseverance’s SHERLOC and WATSON detected macromolecular carbon, a potential sign of ancient organics and past habitability in Jezero Crater; but MMCs can form abiotically, so a definitive conclusion requires returning samples to Earth—an effort whose future remains uncertain amid stalled Mars Sample Return plans.
NASA is weighing a cheaper, potentially commercial reboost to extend the aging Hubble Space Telescope’s life, inspired by a cost-effective plan already pursued for the Swift Observatory. Before any reboost can happen, NASA must reduce Hubble’s operating costs; the telescope is currently about 326 miles up and could reenter around 2033, with 2025 operating costs pegged at roughly $98.8 million.
NASA’s Psyche spacecraft used a Mars flyby as a gravity assist to gain speed and adjust its orbit on the way to the metal-rich asteroid Psyche in 2029, while testing its science suite (a dual-camera multispectral imager, gamma-ray/neutron spectrometer, and magnetometer). The Mars encounter yielded rare imagery from a high phase angle, including a crescent view and a southern polar to Valles Marineris panorama, helping calibrate instruments ahead of the asteroid mission. The gravity assist boosted speed by about 1,000 mph and nudged the orbit by roughly 1 degree; Psyche launched in Oct 2023 and will complete a 2.2-billion-mile journey.
A new study detects iron-60 in Antarctic ice aged 40,000–80,000 years, tying Earth’s passage through the Local Interstellar Cloud to debris from a past supernova. Using accelerator mass spectrometry on hundreds of kilograms of ice and corroborating isotopes, researchers show the cloud around the Solar System contains material from an ancient stellar explosion, with the iron-60 signal varying over tens of thousands of years and supporting the idea that our cosmic neighborhood records such events.
NASA marks Hubble’s 36th year in orbit with a sharper image of the Trifid Nebula, showcasing the telescope’s 1.7 million observations, 22,000+ papers, and 1.3 million citations while highlighting its role in studying star formation and nebular dynamics.
NASA’s Curiosity rover captured Mastcam mosaics showing thousands of polygonal, honeycomb-like textures across rocks near Antofagasta crater in Gale Crater, a pattern scientists are evaluating as a clue to Mars’ ancient watery past; researchers are testing hypotheses from drying/wetting cycles and groundwater mineralization, complementing other recent findings of organics in Martian rocks.
The European Space Agency’s Euclid telescope is powering a new citizen-science project on Zooniverse called Space Warps, enlisting volunteers to identify strong gravitational lenses in Euclid’s high‑quality images. This work helps study dark matter, dark energy, and cosmic expansion, with around 300,000 AI‑preselected images guiding the search and the team expecting to uncover more than 10,000 new lens candidates from Euclid Data Release 1.
MIT and Woods Hole researchers unveiled a generalized wave-model showing that ocean waves on alien seas (like Titan’s methane/ethane lakes) can be dramatically different from Earth’s, driven by gravity, liquid composition, and atmospheric density; on Titan, simulations predict tall, slow-moving waves due to its low gravity and thick atmosphere, reshaping expectations for shoreline erosion, sediment transport, and the design of future landers or floating probes.
A UW–Madison-led study compared a E. coli–T7 phage clash on Earth and in microgravity aboard the ISS. In space, phages infect more slowly but still acquire mutations that improve their ability to bind bacterial receptors, while the bacteria develop space-specific defenses—demonstrating space-driven evolutionary paths that could inform phage-based strategies against drug‑resistant pathogens on Earth.
A 60-meter asteroid (2024 YR4) has about a 4% chance to strike the Moon on December 22, 2032. If it hits, it could form a ~1 km crater with a 100 m molten pool, trigger a magnitude-5.0 “moonquake,” vaporize rock, and loft up to 400 kg of debris that could reach Earth, potentially posing risks to satellites and even ground hazards. Yet scientists see this as a rare, invaluable chance to study lunar geology, interior structure, and crater formation in real time using telescopes and space assets, while some agencies consider deflection to prevent the impact. The piece notes Universe Today as the original source.
ESA's Solar Orbiter captured a large solar flare as a cascade of rapid reconnection events—an avalanche that builds from weak disturbances to a full eruption—producing rain-like plasma blobs and high-energy X-rays; four instruments provided a detailed, multi-instrument view, supporting avalanche models and improving understanding of energy transfer from magnetic fields to plasma and particles, with implications for space weather forecasting.