Tag

Deimos

All articles tagged with #deimos

space20 days ago•10 min saved

Deimos's Near-Surface Gravity Turns Orbit into Racewalking Pace

New measurements show Deimos’s tiny gravity makes a circular orbit just above its surface about 14.2 km/h, while about 20.1 km/h would let you escape local gravity—speeds comparable to elite racewalking and a modest sprint. The result highlights how movement on this small, irregular moon blends running, hopping, and orbital dynamics, with three-body effects, surface gravity variations, and a tiny Hill sphere limiting practical options. Real missions would require navigation margins, anchors, tethers, or small propulsion, not a simple two-body burn, and direction and terrain matter due to Deimos’s rotation and irregular shape.

via Space Daily|

#deimos #escape-velocity #gravity

space1 month ago•5 min saved

Deimos’s Deep Past: New Simulations Point to an Ancient Asteroid Impact

New Nature Astronomy research using Bern SPH simulations suggests Deimos’ surface was sculpted by a roughly 320-meter asteroid impact at a 45-degree angle, producing a southern polar depression and a thick regolith layer; the study fuels ongoing debates about Mars’ moons’ origins (captured asteroids, split comets, or other scenarios) while noting that solar wind–driven electrostatic shocks could pose challenges for future missions.

via Futura, le média qui explore le monde|

#asteroid-impact #deimos #mars

science1 month ago•204 min saved

A single asteroid may have carved Mars' moon Deimos

A new study using Hera flyby data and impact simulations suggests Deimos’ smooth, dusty surface and its 6.2‑mile southern crater were produced by one asteroid about 320 meters across at a ~45° angle, redistributing surface material globally without shattering the moon. This supports Deimos as a porous rubble-pile object and helps explain its origin, while Japan’s MMX mission (launching soon) will study both Deimos and Phobos to test the model and uncover the moons’ history.

via CNN|

#asteroid-impact #deimos #hera-mission

space1 month ago•9 min saved

Japan eyes Mars’ moons for first sample-return voyage

Japan’s JAXA plans the unmanned MMX mission to orbit Mars’ moons Phobos and Deimos, landing on Phobos to collect at least 10 grams of material and returning a capsule to Earth around 2031, in collaboration with CNES, DLR, NASA and ESA. The mission aims to shed light on how Mars and its moons formed and how water, volatiles, and organics reached the inner solar system, as rival China pursues its Tianwen-3 sample-return and NASA’s Perseverance is noted as having samples but described as effectively canceled in the article.

via Japan Today|

#deimos #mars-moons #mmx

science1 year ago•3 min saved

Mars's Moons: Do They Exist?

Mars has two small moons, Phobos and Deimos, whose origins are still debated; they may be captured asteroids or formed from debris after a collision with Mars. Upcoming JAXA missions aim to analyze samples from Phobos to better understand their formation and possibly early Mars conditions.

via Live Science|

#deimos #mars #moons

space1 year ago•2 min saved

Stunning Photo Captures Deimos from Mars Surface

A new image captured by NASA's Perseverance rover in Mars' Jezero Crater shows the faint, star-like appearance of Deimos, one of Mars' two moons, highlighting the serene and mysterious nature of the Martian environment and contributing to ongoing scientific investigations into the origins and future of these small moons.

via ScienceAlert|

#deimos #mars #moon

science1 year ago•4 min saved

Mars' Moons: Born from Asteroid Destruction?

New computer simulations suggest that Mars' moons, Phobos and Deimos, may have formed from debris when a large asteroid was torn apart by Mars' gravity. This model explains their circular orbits and differing distances from Mars, challenging previous theories of their origin. The hypothesis will be tested by the upcoming Martian Moons eXploration mission, which aims to return samples from Phobos to Earth for analysis.

via Space.com|

#asteroid #deimos #mars

science1 year ago•4 min saved

Asteroid Impact Theory Sheds Light on Mars' Moons Origins

A new study by NASA scientists using supercomputer simulations suggests that Mars' moons, Phobos and Deimos, may have formed from the debris of a disrupted asteroid that passed too close to Mars. This theory, which differs from previous hypotheses, accounts for the moons' unique shapes and Deimos' large orbital radius. The study's findings could be further explored by the upcoming Martian Moons Exploration (MMX) mission, which aims to collect samples from Phobos and Deimos to better understand their origins.

via NASASpaceflight.com|

#asteroids #deimos #mars

space-exploration2 years ago•1 min saved

Scientists Challenge Assumptions About Mars' Moon

Scientists from France and Germany propose that Mars' moon Phobos may have originated from a comet, challenging previous theories about its formation. This hypothesis is based on data from the Mars Express spacecraft, which shows Phobos has properties similar to comets. The upcoming Martian Moons eXploration (MMX) mission by Japan aims to study Phobos and Deimos further, potentially uncovering their true origins.

via Futurism|

#astronomy #comet #deimos

gaming2 years ago•4 min saved

"Rainbow Six Siege's Operation Deadly Omen: New Operator, Anti-Cheat Update, and More!"

Operation Deadly Omen in Rainbow Six Siege introduces the new operator Deimos with the DeathMark ability and Vendetta .44 revolver, an Anti Cheat update, ranked requirements, Azami nerf, shield rework, scope modifications, new attachments, throw trajectory, rappeling mechanic change, AI Playlist improvements, LMG buffs, Locker addition, and the upcoming release on Mar. 12, 2024.

via SiegeGG|

#anti-cheat-update #deimos #gaming

astronomy3 years ago•2 min saved

"Exploring Martian Skies: Can Phobos and Deimos Grace the Surface?"

Both Phobos and Deimos, the two moons of Mars, can be seen from the surface of the planet. Phobos is larger and closer to Mars, appearing as bright as magnitude -9, while Deimos is smaller and farther away, peaking at magnitude -5. Phobos undergoes noticeable waxing and waning during a single appearance, while Deimos takes over 30 hours to orbit and goes through a full set of phases roughly twice from moonrise to moonset. Both moons exhibit lunar phases like Earth's Moon.

via Astronomy Magazine|

#astronomy #deimos #lunar-phases

astronomy3 years ago•3 min saved

Deimos: Martian Mini-Me?

The United Arab Emirates’s space probe Hope recently flew past Mars' moonlet Deimos and gave us our first look at the moonlet’s far side. The initial spectral analysis suggests Deimos is made out of Martian rock. This contradicts the long-held hypothesis that Deimos was an asteroid captured by Mars' gravity. The discovery has led scientists to rearrange their ideas about the origin of Mars' moons.

via JSTOR Daily|

#astronomy #deimos #mars

space3 years ago•2 min saved

Exploring the Enigmatic Moon Deimos of Mars.

The United Arab Emirates Space Agency (UAESA) has captured the highest resolution images of Mars' moon Deimos to date, revealing that the tiny satellite may not have originated from captured asteroids as previously believed. Instead, observations from the UAE's Hope orbiter suggest that Deimos and its larger counterpart Phobos may have formed from leftover material after Mars' formation or may be chunks of the planet that broke free following an asteroid impact. The mystery surrounding the moons may soon be cleared up as Japan plans to send a probe to study them and retrieve samples from Phobos in the mid-2020s.

via Freethink|

#deimos #hope-orbiter #mars

science3 years ago•2 min saved

Hope Probe captures stunning image of Deimos from close range.

The United Arab Emirates spacecraft, Hope, captured high-resolution images of Deimos, one of Mars's two moons, during its first flyby on March 10. The images suggest that Deimos is more similar to Mars than to carbon-rich asteroids, strengthening the theory that it formed at the same time as Mars. Hope's observations of Deimos will continue through 2024, allowing scientists to analyze differences between the near and far sides of the moon and expand on what we know about Mars.

via The Hill|

#astronomy #deimos #mars

space3 years ago•2 min saved

New data and photos challenge previous theories on Mars' moon Deimos.

The United Arab Emirates released new images and data of Mars' smaller moon, Deimos, challenging the long-standing theory that the moons are asteroids trapped in the planet's orbit. The images suggest that Deimos is composed of dark, volcanic rock consistent with the Red Planet's composition, indicating that both moons may have formed from leftover debris after something struck Mars. The findings were unveiled during a special session at the European Geosciences Union General Assembly in Vienna.

via Houston Chronicle |

#deimos #formation #mars