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.

Type to find tags:
× 32 × 9
Questions about the early phases of the star formation process. A protostar is a large mass of gas that results of the contraction of a molecular cloud.
× 21
Questions regarding neutron stars which emit regular pulses of electromagnetic radiation.
× 10 × 5
× 13
Questions about quasi-stellar radio sources, active galactic nuclei that are far away and quite old.
× 26 × 6 × 2
× 51
Questions about observation performed in the radio frequency range of the electromagnetic spectrum (between 10 MHz and 1GHz).
× 5
Tag for questions asking if fictional ideas are possible or correct
× 5 × 7 × 47
Questions related to the phenomenon whereby electromagnetic radiation (such as visible light) generated by an object moving away from an observer will have increased in wavelength (i.e. shifted toward…
× 3
× 6 × 8 × 5
× 16
Questions about planets that do not orbit around a star. These planets travel through space.
× 60
Questions regarding the action of or an object rotating along an axis.
× 22
Questions regarding an object orbiting around another object due to the force of gravity.
× 29
Questions about Saturn, the 6th planet in Earth's solar system.
× 6
× 4
infinitely dense.
× 20
Questions regarding the physical dimensions of a celestial object.
× 7
× 24
Questions about computer programs that assist modeling and observing the dynamics of astronomy.
× 18