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Solar system planets, major moons, and 3 stars of different sizes are shown comparatively in three levels of zoom: one for the rocky planets, one for the gas giants, and one for the stars. Largest moons of the Solar System to scale.
Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planets. In order from the Sun, they are four terrestrial planets (Mercury, Venus, Earth and Mars); two gas giants (Jupiter and Saturn); and two ice giants (Uranus and Neptune). All terrestrial planets have solid surfaces.
Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km; 432,300 mi).
This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume).
Mercury is one of four terrestrial planets in the Solar System, which means it is a rocky body like Earth. It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi). [ 4 ] Mercury is also smaller —albeit more massive—than the largest natural satellites in the Solar System, Ganymede and Titan.
List of the most massive known stars. Legend. Wolf–Rayet star. Luminous blue variable. O-type star. B-type star. The following two lists show a few of the known stars, including the stars in open cluster, OB association and H II region.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element ...
From largest to smallest structure: Local Interstellar Cloud – immediate galactic neighborhood of the Solar System. Solar System – star and planetary system where the Earth is located. Earth – the only planet known to have life.