We review current status of Russian space research in the fields of planetary and Earth science. In the recent years planetary experiments of Space Research Institute are flown onboard six European and US missions at Mars, Venus, Moon and Mercury. In addition, two instrument", "url": "https://doi.org/10.5194/egusphere-egu2020-22340", "authority": 0.85, "channel": "semanticscholar" }, { "source": "SemanticScholar: Fang 2024 — The moon-forming impact as a constraint for the inner solar system’s formation", "text": "\n The solar system planets are benchmarks for the planet formation theory. Yet two paradigms coexist for the four terrestrial planets: the prolonged collisional growth among planetesimals lasting >100 million years (Myr) and the fast formation via planetesimals accreting pebbles ", "url": "https://doi.org/10.1093/mnrasl/slae109", "authority": 0.85, "channel": "semanticscholar" }, { "source": "SemanticScholar: Brasser 2024 — Terrestrial planet formation during giant planet formation and giant planet migration. I", "text": "Terrestrial planet formation (TPF) is a difficult problem that has vexed researchers for decades. Numerical models are only partially successful at reproducing the orbital architecture of the inner planets, but have generally not considered the effect of the growth of the giant p", "url": "https://www.aanda.org/articles/aa/pdf/forth/aa52394-24.pdf", "authority": 0.85, "channel": "semanticscholar" }, { "source": "SemanticScholar: Galiazzo 2014 — The Hungaria region as a possible source of Trojans and satellites in the inner Solar s", "text": "The Hungaria Family (the closest region of the Main Belt to Mars) is an important source of Planet-Crossing-Asteroids and even impactors of terrestrial planets. We present the possibility that asteroids coming from the Hungaria Family get captured into co-orbital motion with the ", "url": "https://academic.oup.com/mnras/article-pdf/445/4/3999/6095023/stu2016.pdf", "authority": 0.85, "channel": "semanticscholar" }, { "source": "SemanticScholar: Ipatov 2024 — Migration of Celestial Bodies in the Solar System and in Some Exoplanetary Systems", "text": "A review of the results on the migration of celestial bodies in the Solar System and in some exoplanetary systems is presented. Some problems of planet accumulation and migration of planetesimals, small bodies and dust in the forming and present Solar System are considered. It ha", "url": "https://arxiv.org/pdf/2411.05436", "authority": 0.85, "channel": "semanticscholar" }, { "source": "Venus May Have Destroyed Its Own Moon, New Research Suggests - The Debrief", "text": "A new study published in The Astrophysical Journal by UC Riverside astrophysicist Stephen Kane suggests that if Venus once had a moon, the planet’s slow rotation could have driven it inward until it eventually collided with the Venusian surface.", "url": "https://thedebrief.org/venus-may-have-destroyed-its-own-moon-new-research-suggests/", "authority": 0.7, "channel": "brave" }, { "source": "Did Venus have a moon for nearly 2 billion years?", "text": "So if it lasted almost 2 billion years, then that means Venus might have lost its moon about 2.5 billion years ago. The researchers submitted their not-yet peer-reviewed paper to the arXiv preprint server on September 2, 2026.", "url": "https://earthsky.org/space/venus-had-a-moon-moons-roche-limit/", "authority": 0.7, "channel": "brave" }, { "source": "Wikipedia: Rogue Trooper", "text": "Rogue Trooper is a science fiction strip in the British comic 2000 AD, created by Gerry Finley-Day and Dave Gibbons in 1981. It portrays the adventures", "url": "https://en.wikipedia.org/wiki/Rogue_Trooper", "authority": 0.5, "channel": "wikipedia" }, { "source": "Wikipedia: Fictional planets of the Solar System", "text": "frequently, fictional planets appear in other locations, such as between Venus and Earth or inside a hollow Earth. Similarly, fictional moons appear in some", "url": "https://en.wikipedia.org/wiki/Fictional_planets_of_the_Solar_System", "authority": 0.5, "channel": "wikipedia" }, { "source": "Wikipedia: Solar System", "text": "terrestrial planets – Mercury, Venus, Earth and Mars. These four planets are part of the inner Solar System. Earth and Mars are the only planets that orbit", "url": "https://en.wikipedia.org/wiki/Solar_System", "authority": 0.5, "channel": "wikipedia" }, { "source": "Wikipedia: List of spacecraft intentionally crashed into extraterrestrial bodies", "text": "that crashed into the Moon baffles NASA scientists". Chron. Wall, Mike (16 November 2023). "Rogue rocket that slammed into the moon last year confirmed", "url": "https://en.wikipedia.org/wiki/List_of_spacecraft_intentionally_crashed_into_extraterrestrial_bodies", "authority": 0.5, "channel": "wikipedia" }, { "source": "Wikipedia: Planetary system", "text": "of a system, much material is gravitationally-scattered into distant orbits, and some planets are ejected completely from the system, becoming rogue planets", "url": "https://en.wikipedia.org/wiki/Planetary_system", "authority": 0.5, "channel": "wikipedia" }, { "source": "Venus Might Have Once Had a Moon. But the Hellish Planet Could Have Destroyed It", "text": "A new study suggests that if a giant impact gave early Venus a substantial moon, tidal forces could eventually have reversed the satellite’s path and dragged it back toward the planet. Venus would then have torn the moon apart, briefly producing a ring before much of the debris f", "url": "https://www.zmescience.com/space/venus-might-have-once-had-a-moon-but-the-hellish-planet-could-have-destroyed-it/", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Devoured Its Moon | WIRED", "text": "“Venus didn’t require a catastrophe ... press release. “It turns out the gravity of the planet itself combined with the rate at which it spins naturally caused the moon to collapse on top of it.”...", "url": "https://www.wired.com/story/venus-may-have-devoured-its-moon/", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Devoured Its Moon, Scientists Find", "text": "Now, a new study published in The Astrophysical Journal upends that consensus, with the authors suggesting that Venus did indeed once have a moon — until it spiraled inwards and crashed into the planet’s surface in an apocalyptic demise.", "url": "https://futurism.com/space/scientists-venus-devoured-moon", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Devoured Its Own Moon, Astrophysicists Suggest", "text": "Rather than settling into a stable orbit like Earth's moon, a Venusian satellite would have gradually spiralled inward until it was ultimately destroyed in a violent collision with its parent planet.", "url": "https://www.freepressjournal.in/tech/venus-may-have-devoured-its-own-moon-astrophysicists-suggest", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Eaten Its Own Moon. Now the Planet Is Hiding Something.", "text": "New research suggests Earth's closest planetary twin may still be tearing itself apart, hiding enormous tunnels beneath its surface.", "url": "https://darksciencedocs.substack.com/p/venus-may-have-eaten-its-own-moon", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Destroyed Its Own Ancient Moon According to New Orbital Models", "text": "A study led by Stephen Kane of the University of California, Riverside, and published in The Astrophysical Journal, uses complex tidal modeling to simulate how a hypothetical moon might have evolved alongside a young, rapidly spinning Venus. The results indicate that a planet’s c", "url": "https://www.bioscience.com.pk/en/subject/astronomy/venus-may-have-swallowed-its-own-moon-new-models-finds", "authority": 0.5, "channel": "brave" }, { "source": "Billions of Years Ago, Venus May Have Had a Moon—Which the Planet Promptly Gobbled Up, Study Suggests", "text": "Kane and his colleagues suspected that Venus’ slow spin and gravity could pull a moon inward toward the planet and to its eventual death. The team put this hypothesis to the test with computer simulations, building models based on the physics of how planetary bodies interact thro", "url": "https://www.smithsonianmag.com/smart-news/billions-of-years-ago-venus-may-have-had-a-moon-which-the-planet-promptly-gobbled-up-study-suggests-180989510/", "authority": 0.5, "channel": "brave" }, { "source": "Moons Of Venus - Consensus Academic Search Engine", "text": "Modern simulations indicate that Venus could have temporarily captured a moon in the past, which may have influenced its rotation before being lost. However, there is no direct evidence that Venus ever had a long-term natural satellite, and ...", "url": "https://consensus.app/questions/moons-of-venus/", "authority": 0.5, "channel": "brave" }, { "source": "If Venus Had An Ancient Moon, It Was Doomed - Universe Today", "text": ""Venus possesses no natural satellite, raising the question of whether a formed moon could have survived," the authors write.", "url": "https://www.universetoday.com/articles/if-venus-had-an-ancient-moon-it-was-doomed", "authority": 0.5, "channel": "brave" }, { "source": "Did Venus Once Have A Moon That Eventually Crashed Into The Planet", "text": "Did Venus once have a moon? New tidal models suggest an ancient satellite may have spiraled inward and been destroyed by the planet’s gravitational forces.", "url": "https://www.bioscience.com.pk/en/subject/astronomy/tidal-forces-may-have-doomed-an-ancient-moon-around-venus", "authority": 0.5, "channel": "brave" }, { "source": "Astrophysics study suggests Venus may have swallowed its moon | The Express Tribune", "text": "So goes the theory offered by scientists at the University of California, Riverside, and published on Monday in The Astrophysical Journal, marking a departure from past explanations for why Venus, the second planet from the sun, is without a lunar companion. "If it had a moo", "url": "https://tribune.com.pk/story/2629471/astrophysics-study-suggests-venus-may-have-swallowed-its-moon", "authority": 0.5, "channel": "brave" }, { "source": "Did Venus Once Have a Moon That Was Torn Apart by Its Own Gravity", "text": "Venus stands out in our solar system for its desolate, moonless state, but new research suggests this may not always have been the case. A study led by University of California, Riverside planetary scientist Stephen Kane posits that our neighbor could have hosted a natural satell", "url": "https://www.bioscience.com.pk/en/subject/space-science/a-missing-moon-around-venus-may-finally-explain-why-earth-has-one-and-its-neighbor-has-none", "authority": 0.5, "channel": "brave" }, { "source": "Venus may have swallowed its own moon | ScienceDaily", "text": "Computer simulations showed that instead of gradually drifting away like Earth’s moon, a Venusian moon would likely spiral inward until it crashed into the planet, with larger moons falling even faster. ... New simulations suggest Venus’ extremely slow rotation could have caused ", "url": "https://www.sciencedaily.com/releases/2026/09/260915232122.htm", "authority": 0.5, "channel": "brave" }, { "source": "Did Venus swallow its moon? New theory may explain the mystery", "text": "Now, it appears that our neighboring ... Riverside. One previous hypothesis held that Venus once had a moon that was struck by a massive object, shattered and disappeared....", "url": "https://www.ynetnews.com/environment/article/sjav8yhcgx", "authority": 0.5, "channel": "brave" }, { "source": "Could a Rogue Planet Destroy the Earth? - Newsweek", "text": "According to Dorian Abbot, a geophysical sciences professor at the University of Chicago, it is likely that most rogue planets are terrestrial because there are probably more terrestrial planets in general.", "url": "https://www.newsweek.com/rogue-free-floating-planet-collide-earth-1794480", "authority": 0.5, "channel": "brave" }, { "source": "Rogue planet - Wikipedia", "text": "A rogue planet, also termed a free-floating planet (FFP) or an isolated planetary-mass object (iPMO), is an interstellar object of planetary mass which is not gravitationally bound to any star or brown dwarf. Rogue1 in 100 chance that an interstellar visitor could produce the orbits we see today.", "url": "https://www.jpost.com/science/science-around-the-world/article-833115", "authority": 0.5, "channel": "brave" }, { "source": "Debris from terrestrial planet formation: the Moon-forming collision | Monthly Notices of the Royal Astronomical Society | Oxford Academic", "text": "From the differences between the DE and VEMJ simulations it is clear that, although the most important factor in the dynamical evolution of debris from a Moon-forming type impact is its parent planet, the wider planetary environment in which that parent exists is also very import", "url": "https://academic.oup.com/mnras/article/425/1/657/1002593", "authority": 0.5, "channel": "brave" }, { "source": "science based - Long-term stability for a terrestrial planet with rings and a large sub-synchronous moon - Worldbuilding Stack Exchange", "text": "Because of the sun melting it down more and more (and the gravitational forces of the planet and moon) the comet became unstable, broke down into (larger, then smaller) pieces, emitting more and more particles. In the end phase, the debris was totally torn apart and the particles", "url": "https://worldbuilding.stackexchange.com/questions/260381/long-term-stability-for-a-terrestrial-planet-with-rings-and-a-large-sub-synchron", "authority": 0.5, "channel": "brave" }, { "source": "Science Rejects the Idea of a Rogue Planet - Red Sky Story", "text": "In his book Broca’s Brain, Sagan carefully dissects Velikovsky’s claims in Worlds in Collision (which proposed that Venus was a rogue planet ejected from Jupiter and passed near Earth within human history).", "url": "https://redskystory.com/2025/06/07/science-rejects-the-idea-of-a-rogue-planet/", "authority": 0.5, "channel": "brave" }, { "source": "Venus May Have Swallowed Its Own Moon In A Cosmic Collapse", "text": "Published in the Astrophysical Journal, the research from the University of California, Riverside indicates that Venus did not need a massive external catastrophe to lose a satellite.", "url": "https://dailygalaxy.com/2026/09/venus-may-have-swallowed-its-own-moon/", "authority": 0.5, "channel": "brave" }, { "source": "The Sun vs The Rogue Planets/Transcript | SolarBalls Wiki | Fandom", "text": "This is the transcript for The Sun vs The Rogue Planets Narrator: Previously on SolarBalls, the planets of the Solar System wander aimlessly across space. All as part of the Rouge Planets' plan. Meanwhile, the Sun has a lead to find his planets. 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