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.
Atmospheres of planets, moons, and other solar system bodies excluding stars. For those, use "stellar-atmosphere" instead. For influences of Earth's atmosphere on astronomical observations use "atmosp…
227 questions
Questions regarding the 4-dimensional background structure of our universe.
220 questions
Icy bodies that usually consist of methane, water, and other materials that originate from beyond the jovian planets, and occasionally fall into the inner solar system giving off a massive tail as mat…
220 questions
Questions related to the phenomenon whereby electromagnetic radiation (such as visible light) generated by an object moving away from an observer will have increase in wavelength (i.e. shifted toward …
219 questions
Questions about the source or effects of the matter that makes up 85% of the matter in the universe but appears to only interact gravitationally.
218 questions
Questions regarding a pair of stars that are gravitationally bound and orbit around their barycenter.
207 questions
Questions on time, the indefinite progress of events in the Universe.
207 questions
Questions about the complete or partial blocking of the sun by the moon.
206 questions
The near-vacuum extending between the planets and stars, containing small amounts of gas and dust. Also called outer space to refer to the physical universe beyond the Earth's atmosphere.
202 questions
Questions regarding the currently prevalent cosmological model for the origin of the universe.
201 questions
Waves in spacetime formed by the acceleration of massive bodies. A passing wave causes spacetime to be stretched and squashed by a very small amount. Typically we can only detect the most energic grav…
201 questions
Questions regarding the most massive examples of black holes that typically reside at the centers of galaxies.
196 questions
Questions regarding a degenerate star that is mainly composed of neutrons.
190 questions
For astronomy questions with a heavy mathematical component, more than simple formulas. For regular mathematics question, visit our sister site Mathematics Stack Exchange.
188 questions
Questions about using the Python programming language to solve astronomical problems. General questions about Python are off-topic but might be asked on Stack Overflow.
186 questions
Questions regarding the property of astronomical objects that determines their inertial resistance and gravitational interaction with other bodies.
185 questions
Questions about positions of objects in the sky, either relative to a fixed coordinate system like the equatorial and ecliptic coordinate systems, or relative to an observer's point of view.
183 questions
Questions about the observed frequency range of the electromagnetic radiation of a celestial object.
180 questions
Questions about the parameters needed to specify the characteristics of an orbit.
170 questions
Questions related to the physical processes involved in or to the observations of the process of forming a star.
169 questions
Temperature is a measurement of the average kinetic energy of the molecules in an object or system. In simpler words: it's the degree or intensity of heat present in a substance or object that is comm…
158 questions
Questions regarding telescopes in orbit around Earth, such as the Hubble Space Telescope.
156 questions
Questions about inducing chemistry, physics, and many more branches of science into astronomy.
153 questions
Questions about the processes, theories and evidence for the formation of planetary bodies.
152 questions
Behaviour and properties of light, and its interaction with matter, particularly in detection of light.
151 questions
Questions regarding the measurement of the amount of light coming from astronomical objects.
147 questions
Questions regarding the region of space containing all the objects that we can detect using any method of observation.
146 questions
Questions regarding the planet Venus, the second planet from the Sun.
143 questions
Questions involving reference frames, time scales, and how they are determined. Not for general Astronomy 101 questions.
143 questions
Questions regarding the motions of celestial objects.
143 questions
Questions regarding specific terms, names, or naming conventions.
136 questions
Questions about is the electromagnetic radiation remnant from the early stage of the universe, also known as "relic radiation".
136 questions
Questions about the apparent force stretching a body towards and away from the center of mass of another body due to the variance in acceleration due to gravity
134 questions
Questions regarding the amount of energy produced by an object per unit of time.
133 questions
133 questions