https://padlet.com/3065141/ynp7zrfrjybr Made with swagger en-us 2018-01-09 21:44:48 UTC 2025-10-27 18:03:09 UTC hello@padlet.com 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219990910 The Universe is all of space and time (spacetime) and its contents, which includes planets, moons, stars, galaxies, the contents of intergalactic space and all matter and energy. ]]> 2018-01-09 21:46:10 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219990910 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219991607 The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. ]]> 2018-01-09 21:49:26 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219991607 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219992166 Gravity, or gravitation, is a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another, including objects ranging from atoms and photons, to planets and stars.]]> 2018-01-09 21:51:52 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219992166 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219992720 A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.]]> 2018-01-09 21:54:29 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219992720 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219993124 A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky", a reference to the Milky Way.]]> 2018-01-09 21:56:25 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219993124 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219993492 An asteroid is a small object in the Solar System that travels around the Sun. It is like a planet but smaller.]]> 2018-01-09 21:57:48 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219993492 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219993961 A comet is a ball of mostly ice that moves around in outer space. Comets are often described as "dirty snowballs". They are very different from asteroids. ]]> 2018-01-09 21:59:44 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219993961 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219994482 This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has "cleared its neighbourhood" of smaller objects around its orbit.]]> 2018-01-09 22:01:48 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219994482 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219995370
A meteoroid  is a small rocky or metallic body in outer space]]> 2018-01-09 22:05:18 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219995370 3065141 https://padlet.com/3065141/ynp7zrfrjybr/wish/219996128 is Earth's satellite, and we usually see it in the night sky.]]> 2018-01-09 22:08:19 UTC https://padlet.com/3065141/ynp7zrfrjybr/wish/219996128