Weegy: The sun's gravity keeps planets in our solar system in orbit around the sun. (More)

Weegy: Comets are examples of bodies that complete parabolic or hyperbolic orbits. User: Kepler's laws describe how objects move through space; _______ laws describe why objects move in this way. Weegy: Kepler's laws describe how objects move through space; Newton's laws describe why objects move in this way. [ ] (More)

Weegy: An object can be broken up by a planet's gravity once it passes the Roche Limit. User: The Jovian planets are composed primarily of _______ and helium. Weegy: The Jovian planets are composed primarily of hydrogen and helium. User: Hydrogen and helium don't exist in Earth's _______ because the terrestrial planets of Mercury, Venus, Earth, and Mars couldn't exert a strong gravitational pull on hydrogen and helium gas within the nebula. (More)

Weegy: The life cycle of a star depends primarily on its mass with Bigger stars burning their fuel more quickly. User: For nuclear fusion in stars to begin, the elements must undergo extremely high _______ and pressures. Weegy: For nuclear fusion in stars to begin, the elements must undergo extremely high temperatures and pressures. User: Elements heavier than hydrogen are scattered throughout the universe when a massive star explodes as a _______. (More)

Weegy: The major components of the sun are hydrogen and helium. User: The sun is so hot that matter doesn't exist there in as state of a solid, liquid, or gas, but in the state of _______. Weegy: The sun is so hot that matter doesn't exist there in as state of a solid, liquid, or gas, but in the state of PLASMA User: Near the poles, Earth's magnetic field turns inward, and some solar wind strikes the atmosphere, causing it to glow and produce _______. Weegy: Near the poles, Earth's magnetic field turns inward, and some solar wind strikes the atmosphere, causing it to glow and produce a magnetosphere. (More)