space

space

1. planets

   • Rocky plannets
     • earth
       • Radius: 3,959 mi Age: 4.543 billion years Population: 7.347 billion (2015) World Bank Axial tilt: 23.4392811° Volume: 1.08321×1012 km3 (2.59876×1011 cu mi) Polar radius: 6356.8 km (3949.9 mi)
     • mars
       • Radius: 2,106 mi Length of day: 1d 0h 40m Gravity: 3.711 m/s² Surface pressure: 0.636 (0.4–0.87) kPa; 0.00628 atm Equatorial rotation velocity: 868.22 km/h (241.17 m/s
     • mercuary
       • Radius: 1,516 mi Distance from Sun: 35.98 million mi Length of day: 58d 15h 30m Orbital period: 88 days Mass: 3.285 × 10^23 kg (0.055 M⊕) Equatorial rotation velocity: 10.892 km/h (3.026 m/s)
     • venus
       • Radius: 3,760 mi Length of day: 116d 18h 0m Distance from Sun: 67.24 million mi Orbital period: 225 days Surface area: 177.7 million mi² Equatorial rotation velocity: 6.52 km/h (1.81 m/s)
   • gas gients
     • jupiter
       • Radius: 43,441 mi Mass: 1.898 × 10^27 kg (317.8 M⊕) Distance from Sun: 483.8 million mi Surface pressure: 20–200 kPa (cloud layer) Equatorial rotation velocity: 12.6 km/s; 45300 km/h
     • saturn
       • Radius: 36,184 mi Distance from Sun: 888.2 million mi Orbital period: 29 years Length of day: 0d 10h 42m Equatorial rotation velocity: 9.87 km/s (6.13 mi/s; 35,500 km/h)
     • uranus
       • Radius: 15,759 mi Distance from Sun: 1.784 billion mi Orbital period: 84 years Length of day: 0d 17h 14m Equatorial rotation velocity: 2.59 km/s; 9,320 km/h
     • neptune
       • Radius: 15,299 mi Distance from Sun: 2.795 billion mi Orbital period: 165 years Length of day: 0d 16h 6m Equatorial rotation velocity: 2.68 km/s; 9,660 km/h
   • dwarf plannets
     • pluto
       • Radius: 737.6 mi Discovered: February 18, 1930 Orbital period: 248.00 years; 90,560 d; North pole right ascension: 132.993° Volume: : (7.006±0.071)×109 km3; 0.00647 Earths;

2. nebula

   • star forming nebuls
     • i
   • planet forming nebula
   • how to view
     • you need to have an info red telescope as the dust blokes out normal light

3. black holes

   • proof of existance
   • theory

4. supernova

   • what are the causes of
     • A supernova happens where there is a change in the core, or center, of a star. A change can occur in two different ways, with both resulting in a supernova. The first type of supernova happens in binary star systems. Binary stars are two stars that orbit the same point. One of the stars, a carbon-oxygen white dwarf, steals matter from its companion star. Eventually, the white dwarf accumulates too much matter. Having too much matter causes the star to explode, resulting in a supernova. The second type of supernova occurs at the end of a single star’s lifetime. As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.
   • products of

5. stars

   • types of star
     • Protostar: A protostar is what you have before a star forms, T Tauri Star, Main Sequence Star, Red Giant Star, White Dwarf Star, Red Dwarf Star, Neutron Stars,Supergiant Stars

6. meteors, meteorodes, metiorits

   • meteors
     • a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
   • meteoroids
     • a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.
   • metiorites
     • a meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground. More than 90 percent of meteorites are of rock, while the remainder consist wholly or partly of iron and nickel.

7. galacies

   • types of
     • There are three main types of galaxies: Elliptical, Spiral, and Irregular.