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 the comet 67P/Churyumov-Gerasimenko.
5 questions
Questions regarding 99942 Apophis, a large Aten-class Near Earth Object.
1 question
Questions relating to the discovery of a new ninth planet (not Pluto) hypothesized in the Solar System.
32 questions
Questions about the origin of life. Consider also using "astrobiology".
4 questions
for questions that are about the brightness of a celestial object as seen from 10 parsecs away.
34 questions
Questions regarding the process of a massive body gaining mass from objects around it.
13 questions
Questions regarding disks of gas, dust, and plasma around a central object, such as a black hole, which takes in the matter.
50 questions
Questions regarding galaxies that host a compact, energetic core at the center characterized by non-stellar emission.
28 questions
Questions about the technology to improve the performance of optical systems by reducing the effects of rapidly changing optical distortions.
24 questions
Questions about the temporal duration of a celestrial object.
38 questions
0 questions
Questions about the extent to which an astronomic object reflects light or other electromagnetic radiation. Consider using the tag "photometry".
21 questions
2 questions
Questions about a stepwise procedure to solve logical and/ or mathematical problems.
31 questions
0 questions
0 questions
0 questions
Questions about the observation of celestial objects by non-professional astronomers.
435 questions
1 question
Questions about the ability of any image-forming device to distinguish small details of an object.
45 questions
Questions about material composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charge and properties, such as lepton and baryon number.
25 questions
Questions regarding computer applications related to astronomy.
1 question
Questions regarding how bright an object appears to be.
79 questions
2 questions
Questions regarding how in former times, people used and understood celestial phenomena.
7 questions
Questions about man-made objects orbiting astronomical objects.
78 questions
11 questions
Questions about the large ring of rocky bodies between Mars and Jupiter.
24 questions
Questions regarding the change in properties of asteroids through some perturbation.
1 question
Questions regarding relatively small rocky bodies in an orbit around the Sun.
Questions about oscillations, or quakes in stars, where energy is transmitted as seismic waves.
6 questions
Questions about the origins of life on Earth, and the existence and detection of extraterrestrial life.
36 questions
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