CometA comet is an icy, small Solar System body or interstellar object that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces…View analysis →
StarA star is a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense…View analysis →
UniverseThe universe comprises all of existence: all forms of matter and energy, and the structures they form, from subatomic particles to entire galactic filaments. Since the early 20th…View analysis →
SpaceflightSpaceflight (also space flight) is an application of astronautics to fly objects, usually spacecraft, into or through outer space, either with or without humans on board. Most…View analysis →
GalaxyA galaxy is a physical system of stars, planetary systems, stellar remnants, substellar objects, interstellar gas, dust, and dark matter bound together by gravity. The word is…View analysis →
ExoplanetAn exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around…View analysis →
Private spaceflightPrivate spaceflight is any spaceflight development that is not conducted by a government agency, such as NASA or ESA.View analysis →
Asteroid beltThe asteroid belt is a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars. It contains…View analysis →
Physical cosmologyPhysical cosmology is a branch of physics concerned with modeling the universe based on the laws of physics. A cosmological model provides a mathematical description of the…View analysis →
Asteroid miningAsteroid mining is the hypothetical and technically possible extraction of materials from asteroids and other minor planets, including near-Earth objects.View analysis →
Bruce Banner (Marvel Cinematic Universe)Bruce Banner, more commonly known by his alter ego the Hulk, is a fictional character in the Marvel Cinematic Universe (MCU) media franchise originally portrayed by Edward Norton…View analysis →
Spacecraft propulsionSpacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion is used in the vacuum of space after launch vehicle has lifted…View analysis →
Phoenix (spacecraft)Phoenix was an uncrewed space probe that landed on the surface of Mars on May 25, 2008, and operated until November 2, 2008. Phoenix was operational on Mars for 157 sols (161…View analysis →
Sub-orbital spaceflightA sub-orbital spaceflight is a spaceflight in which the vehicle reaches outer space, but its trajectory intersects the surface of the gravitating body from which it was launched…View analysis →
Observational cosmologyObservational cosmology is the study of the structure, the evolution and the origin of the universe through observation, using instruments such as telescopes and cosmic ray…View analysis →
Astronomical objectAn astronomical object, celestial object, stellar object or heavenly object is a naturally occurring physical entity, association, or structure that exists within the universe…View analysis →
Binary black holeA binary black hole (BBH), or black hole binary, is an astronomical object consisting of two black holes in close orbit around each other. Like black holes themselves, binary…View analysis →
Prague astronomical clockThe Prague astronomical clock, or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]), is a medieval astronomical clock attached to the Old Town Hall in Prague, the capital of…View analysis →
Characters of the Marvel Cinematic Universe: M–ZMary MacPherran (portrayed by Jameela Jamil), also known as Titania, is a social media influencer with incredible strength who is obsessed with She-Hulk, ultimately becoming her…View analysis →
PlanetA planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System…View analysis →
AsteroidAn asteroid is a minor planet—an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet—that orbits within the inner Solar…View analysis →
Human spaceflightHuman spaceflight (also referred to as crewed spaceflight, and historically as manned spaceflight) is spaceflight with a crew or passengers aboard a spacecraft, often with the…View analysis →
SpacecraftA spacecraft is a vehicle that is designed to fly and operate in outer space. Spacecraft are used for a variety of purposes, including communications, Earth observation…View analysis →
Halley's CometHalley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing roughly every 74–79 years. It last appeared in the inner…View analysis →
Shared universeA shared universe or shared world is a fictional universe from a set of creative works where one or more writers (or other artists) independently contribute works that can stand…View analysis →
PlanetariumA planetarium (pl.: planetariums or planetaria) is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training…View analysis →
AstrophysicsAstrophysics is a science that applies the methods and principles of physics and chemistry in the study of astronomical objects and phenomena including the universe. As one of…View analysis →
Juno (spacecraft)Juno is a NASA space probe orbiting the planet Jupiter. Built by Lockheed Martin and operated by NASA's Jet Propulsion Laboratory, the spacecraft was launched from Cape Canaveral…View analysis →
Cosmology of Tolkien's legendariumThe fictional cosmology of J. R. R. Tolkien's legendarium combines aspects of Christian theology and metaphysics with pre-modern cosmological concepts in the flat Earth paradigm…View analysis →
Accretion (astrophysics)In astrophysics, accretion is the accumulation of matter into a massive object by gravitationally attracting more matter. If the matter is gaseous the result is an accretion…View analysis →
Submillimetre astronomySubmillimetre astronomy or submillimeter astronomy (see spelling differences) is the branch of observational astronomy that is conducted at submillimetre wavelengths (i.e…View analysis →
Astronomical seeingIn astronomy, seeing is the degradation of the image of an astronomical object due to turbulence in the atmosphere of Earth that may become visible as blurring, twinkling or…View analysis →
Astronomical transitIn astronomy, a transit (or astronomical transit) is the passage of a celestial body directly between a larger body and the observer. As viewed from a particular vantage point…View analysis →
