Tags
A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Questions regarding Neptune, the 8th and furthest major planet orbiting Earth's sun.
62 questions
Questions about the time-dependence of the light intensity of a celestial object or region.
62 questions
Questions regarding the second ordinate of the equatorial celestial system.
60 questions
Questions regarding two objects colliding into each other with considerable force.
60 questions
Questions regarding the theory of gravity as proposed by Newton, in which the force of gravity depends only on the mass of bodies, a constant, and the distance between them, and depends on one equatio…
60 questions
Questions about the NASA space observatory famous for finding potentially habitable exoplanets. Do not use this tag for questions about Johannes Kepler.
60 questions
59 questions
Questions about red giants, large luminous low-mass stars in a late phase of stellar evolution.
59 questions
Questions on any of the 5 locations where a small object can maintain a stable orbital configuration with respect to two co-orbiting larger bodies.
57 questions
Questions about planets that do not orbit around a star. These planets travel through space.
56 questions
Questions about reflecting telescopes using a concave primary mirror and a flat diagonal secondary mirror.
56 questions
Questions related to processes and principles related to the interior and the solid surface of a planetary body.
55 questions
54 questions
Questions about the ability of any image-forming device to distinguish small details of an object.
53 questions
Questions about the simplest and most abundant element in the Universe.
53 questions
Questions regarding the inner portion of a galaxy; in the Milky Way, this is the area around Sagittarius A*.
52 questions
Questions about infrared astronomy, both observations (in the broadest sense) and instruments. The infrared part of the electromagnetic spectrum has a longer wavelength than visible light, but shorter…
52 questions
52 questions
51 questions
Questions about the origins of life on Earth, and the existence and detection of extraterrestrial life.
51 questions
Questions regarding the National Aeronautics and Space Administration, the American civilian space agency.
51 questions
Questions regarding a substance that takes up space, has volume, and has mass. Matter usually occurs in 5 forms, namely plasma, gas, liquid, solid, and bose-einstein condensate.
51 questions
Questions regarding a sudden brightness increase due to the release of magnetic energy from the sun.
49 questions
Questions about the dynamical processes leading to the assembling of a celestial object.
49 questions
Questions about the chemical reactions that occur on celestial bodies, in the interstellar medium, and in other astronomical environments.
49 questions
Questions targeting the exact (possibly mathematical) description of a phenomena or term.
49 questions
Questions regarding stars that undergo changes in their spectra, temperature, or luminosity.
49 questions
Questions regarding the movement of a celestial body's poles in relation to the stars in the night sky.
48 questions
48 questions
Questions about a depression on the surface of solid celestrial ojects, use also when asking about maar or caldera.
48 questions
For questions about Hawking radiation, emitted by black holes and causing them to slowly evaporate. Use together with the [black-hole] tag.
48 questions
for questions that are about the brightness of a celestial object as seen from 10 parsecs away.
47 questions
Questions about red dwarfs, the smallest and most abundant stars in the universe.
47 questions
Questions regarding a type of elementary particle with 0 mass and is a quantum of the electromagnetic field. Photons always travel at constant speed in a vacuum.
47 questions