Orders of magnitude (mass)

To help compare different orders of magnitude, the following lists describe various mass levels between 10⁻⁴⁰ kg and 10⁵³ kg.

Units of mass

The table below is based on the kilogram (kg), the base unit of mass in the International System of Units (SI). The kilogram is the only standard unit to include an SI prefix (kilo-) as part of its name. The gram (10⁻³ kg) is an SI derived unit of mass. However, the names of all SI mass units are based on gram, rather than on kilogram; thus 10³ kg is a megagram (10⁶ g), not a "kilokilogram".

The tonne (t) is a SI-compatible unit of mass equal to a megagram, or 10³ kg. The unit is in common use for masses above about 10³ kg and is often used with SI prefixes.

Other units

Other units of mass are also in use. Historical units include the stone, the pound, the carat, and the grain.

For subatomic particles, physicists use the mass equivalent to the energy represented by an electronvolt (eV). At the atomic level, chemists use the mass of one-twelfth of a carbon-12 atom (the dalton). Astronomers use the mass of the sun (M_☉).

Selena Gomez

Selena Marie Gomez (/səˈliːnə məˈriː ˈɡoʊmɛz/ sə-LEE-nə mə-REE GOH-mez;Spanish pronunciation: [seˈlena ˈɣomes]; born July 22, 1992) is an American singer and actress. Born and raised in Grand Prairie, Texas, she was first featured on the children's series Barney & Friends in the early 2000s. In 2007, Gomez came to prominence after being cast in the Disney Channel series Wizards of Waverly Place, in which she starred as the lead character, Alex Russo, until its conclusion in 2012. She formed the band Selena Gomez & the Scene after signing a recording contract with Hollywood Records in 2008; they released the studio albums Kiss & Tell (2009), A Year Without Rain (2010), and When the Sun Goes Down (2011) before beginning a hiatus in 2012.

Gomez entered the film industry with star billings in feature films including Ramona and Beezus (2010), Monte Carlo (2011), and Hotel Transylvania (2012). She embraced an increasingly mature public image with her star billing in the film Spring Breakers (2013) and her 2013 debut solo studio album, Stars Dance. The latter project debuted at number one on the US Billboard 200 and included the Billboard Hot 100 top-ten single "Come & Get It." Gomez was released from her recording contract with Hollywood Records following the completion of her compilation album For You (2014). She subsequently signed with Interscope Records to continue work on her sophomore studio album, Revival (2015). It debuted at number one in the US and featured the top-five singles "Good for You" and "Same Old Love" and the top-ten single "Hands to Myself."