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 about the space observatory GAIA.
46 questions
A sky-survey is a general map or image of a region of the sky which lacks a specific observational target, but this tag also applies to surveys of a given class of objects, (e.g. TESS)
45 questions
Questions about planets that do not orbit around a star. These planets travel through space.
45 questions
Questions about reflecting telescopes using a concave primary mirror and a flat diagonal secondary mirror.
45 questions
Questions related to processes and principles related to the interior and the solid surface of a planetary body.
44 questions
Questions regarding lists of star designations.
44 questions
Questions about the chemical reactions that occur on celestial bodies, in the interstellar medium, and in other astronomical environments.
43 questions
Questions regarding the second ordinate of the equatorial celestial system.
43 questions
Questions about the simplest and most abundant element in the Universe.
43 questions
Questions about the dynamical processes leading to the assembling of a celestial object.
43 questions
Questions regarding the National Aeronautics and Space Administration, the American civilian space agency.
42 questions
Questions regarding the large-scale change of orbits over time, as in the Nice Model.
42 questions
Questions about red giants, large luminous low-mass stars in a late phase of stellar evolution.
41 questions
Questions regarding the inner portion of a galaxy; in the Milky Way, this is the area around Sagittarius A*.
41 questions
Questions targeting the exact (possibly mathematical) description of a phenomena or term.
41 questions
Questions about the temporal duration of a celestrial object.
40 questions
Questions regarding undesired brightening of the night sky inhibiting observation of astronomical objects.
40 questions
Questions regarding celestial bodies that are in hydrostatic equilibrium (spheroidal) and orbit the Sun directly, but do not fulfill the IAU's criterion of "clearing" their neighbourhood of planetesim…
40 questions
Questions regarding casually watching the stars.
39 questions
Questions related to Astropy, a community Python package for Astronomy
39 questions
Questions about the "adulthood" of stars. The main sequence is a distinctive band of stars that appears in a color-magnitude plot (known as Hertzsprung-Russell diagram). Stars appear in the main seque…
39 questions
Questions about the origins of life on Earth, and the existence and detection of extraterrestrial life.
38 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.
38 questions
Questions regarding a sudden brightness increase due to the release of magnetic energy from the sun.
38 questions
For questions about objects or phenomena outside Earth, generally on other planets.
38 questions
Questions about the circumstellar disk orbiting in the outer Solar System, beyond the orbit of Neptune.
38 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.
38 questions
Questions which are asking about the mathematical formulations whose theoretical and numerical analysis provides insight, answers, and guidance useful for the originating application.
38 questions
Questions about primary, unprocessed measurements and about where to find them.
37 questions
Questions about the time-dependence of the light intensity of a celestial object or region.
37 questions
Questions about the branch of astronomy that studies the regularities in the motions of stars in gravitational fields of stellar systems, as well as the evolution of stellar systems.
37 questions
Questions regarding grouping objects together based on one or more shared property.
37 questions
Questions regarding the material at or near the center of an astronomical object.
36 questions
Questions regarding Uranus, the 7th planet from Earth's sun.
36 questions
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