Topic

Space & astronomy

Moon landings, satellites, planets and astronomy claims tested against observations, tracking data, physical samples and independent measurements.

Space claims often rely on unfamiliar visual conditions or distrust of a single institution. This topic looks for evidence that can be checked across instruments, observatories, laboratories and time rather than asking readers to accept an authority’s word.

Interactive model

Explore the scale of the Solar System

Screenshot of the Solar System Explorer interface in 3D showing planetary orbits, the Kuiper Belt and distance labels.
Space & astronomy · Interactive model Beta

Solar System Explorer

Explore the scale of the Solar System, the heliosphere, the hypothetical Oort Cloud and the nearest stars in linear and logarithmic views.

Use this interactive model as scientific context for questions about planetary geometry, satellites, alleged domes and extraterrestrial visitation. It also helps frame the Fermi paradox: if technological civilizations may exist elsewhere, why have we not found confirmed evidence of them? Vast distances impose important physical and engineering constraints, but distance alone cannot establish whether Earth has ever been visited.

Educational context, not a standalone verdict. Some boundaries and visual effects are illustrative. Individual claims require independent observations and sources.

Open Solar System Explorer

Investigations

Claims in this topic

19
Unsupported Reviewed Oct 15, 2026

Are NASA and astronomers hiding an approaching planet?

No credible evidence currently establishes both parts of the claim: a detected Earth-approaching planet-like body and a coordinated decision to conceal it. Instead, searches for hypothetical distant planets are published openly across multiple institutions, with survey limits, candidate regions and astrometric observations publicly documented.

Contradicted Reviewed Oct 15, 2026

Is Nibiru a real planet that repeatedly enters the inner Solar System?

Astronomers do consider a legitimate hypothesis for an undiscovered distant Planet Nine, but its inferred orbit stays hundreds of astronomical units from the Sun. Wide-field surveys and planetary dynamics strongly constrain large unseen bodies, while the ancient term Neberu is attested in scholarly Mesopotamian corpora as a name for Jupiter rather than evidence of a hidden 3,600-year planet.

Contradicted Reviewed Oct 12, 2026

Are the Sun and stars small, nearby objects?

Apparent size alone cannot determine distance, but astronomical distances are measured through geometry. The Earth-Sun distance is constrained by solar-system measurements, while stellar parallax directly measures the shift of nearby stars as Earth moves around the Sun. These methods place the Sun about one astronomical unit away and stars far beyond the solar system.

Contradicted Reviewed Oct 12, 2026

Would the Van Allen radiation belts have made the Apollo missions impossible?

The Van Allen belts are real radiation hazards, but hazard is not the same as a lethal dose. Apollo trajectories crossed the belts relatively quickly, spacecraft shielding reduced exposure, and onboard dosimeters recorded mission doses well below acute radiation-injury levels. A major solar particle event could have raised risk substantially, but none struck during the crewed lunar missions.

Contradicted Reviewed Oct 11, 2026

Would the vacuum of space strip away Earth's atmosphere?

Earth's atmosphere is not separated from space by a sharp pressure wall. Gravity holds most atmospheric molecules while pressure and density decrease continuously with altitude; the exosphere gradually merges into interplanetary space, and some particles do escape without the entire atmosphere being stripped away.

Contradicted Reviewed Oct 10, 2026

Did Earth's geographic poles shift abruptly in recorded history?

True polar wander is a real geological process, and the magnetic poles also move and reverse. Neither is evidence for a rapid large-angle geographic pole shift in recorded history: measured polar motion is small, while large true-polar-wander events occur on geological timescales.

Contradicted Reviewed Oct 10, 2026

Did Earth once have a 360-day year in recorded history?

Ancient cultures did use schematic 360-day calendars, but they also used 365-day and lunisolar systems. A 360-day computational calendar is not evidence that Earth's orbital year physically changed, and historical astronomy constrains the required rotation/orbit discontinuity.

Contradicted Reviewed Oct 10, 2026

Did Venus once move through the Solar System like a comet?

Velikovsky's proposed historically wandering Venus would require a massive rocky planet to cross inner-planet orbits and rapidly settle. No verified ancient orbit documents that event; early Solar System scattering and bright appearances are distinct claims.

Contradicted Reviewed Oct 10, 2026

Was Venus expelled from Jupiter?

Velikovsky proposed that Venus came from Jupiter within human history. Terrestrial accretion and long-term Venus geology conflict with this recent-origin scenario; atmospheric isotope measurements alone are too imprecise to determine Venus's origin.

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Skin