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Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe. Sir Isaac Newton (1642 -- 1727) discovered that a force is required to change the speed or ...
An invisible object in outer space formed when a massive star collapses from its own gravity. A black hole has such a strong pull of gravity that not even light can escape from it. BLUR To make less clear, to run together. BIG BANG THEORY A theory that says the universe began with a super-powerful explosion. BOLT A flash of lightning. BOULDER
Smaller, lighter objects, such as tennis balls. 3. Activity: Explain that the sheet represents spacetime, the large object represents the Sun and the smaller object represents a planet. Have the students pull the edges of the sheet outward. Make sure the sheet is taut. Roll the lighter balls across the sheet. Note how they travel in a straight ...
What makes the Sun shine? Answer: The simple answer is that deep inside the core of the Sun, enough protons can collide into each other with enough speed that they stick together to form a helium nucleus and generate a tremendous amount of energy at the same time. This process is called nuclear fusion.
The Capture Theory: This theory proposes that the Moon was formed somewhere else in the solar system, and was later captured by the gravitational fieldof the Earth. The Moon's different chemical composition could be explained if it formed elsewhere in the solar system, however, capture into the Moon's present orbitis very improbable.
Galileo designed a variety of scientific instruments. Among them was the hydrostatic balance. This was an instrument used to find the specific gravity of objects by weighing them in water. Go to Imagine the Universe! (A site for ages 14 and up.) The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center ...
Sir Isaac Newton. Isaac Newton was born in 1643 in Woolsthorpe, England. His father was a wealthy, uneducated farmer who died three months before Newton was born. Newton's mother remarried and he was left in the care of his grandmother. He attended Free Grammar school. Though Newton did not excel in school, he did earn the opportunity to attend ...
Gravity then pulled in more matter from areas of lower density and the clumps grew. After about 200 million years of this clumping, there was enough matter in one place that the temperature got high enough for nuclear fusion to begin - providing the engine for stars to glow.
Aug 25, 2023 · Starlight dances in the silver of the night sky. Way above the clouds we will be sailing high. Sailing high. Sailing high ooh. You and me we're gonna touch the stars. Find the center of the universe. New reality in front of us. Escaping gravity. We'll be rising high above the rain.
While he realized that no string connects the Moon and Earth, he imagined an invisible string called gravity which provides a pull just like the real string. He realized that the amount of the pull was dependent on the amount of matter in each object (in this case, the masses of the Earth and Moon) since it was clear from swinging the washer on a string that a larger washer weight required ...
