Earth is a terrestrial (rocky) planet with a mass of approximately 5.97 x 10²⁴ kg and an equatorial diameter of about 12,756 km. It has a mean density of 5.514 g/cm³ and a total surface area of roughly 510 million km², of which 71% is covered by water and 29% by land.

Andromeda Galaxy is a spiral galaxy, the closest spiral galaxy to the Milky Way, and could be seen by the naked eye, it's about 2.5 million light years away from earth, has a diameter of 220,000 light years, and a mass of roughly 1.5 trillian solar masses.

The photo shows a dense star field with stars of varying brightness, or apparent magnitude, which measures how bright they appear from Earth, not their intrinsic luminosity. Colors indicate temperature: blue and white are hotter, yellow medium, and red cooler.