50 space terms for understanding the universe

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50 space terms for understanding the universe
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Yes, 'spaghettification' is a space term.

The National Aeronautics and Space Agency, or NASA, was founded on July 29, 1958, when President Dwight D. Eisenhower signed the National Aeronautics and Space Act, one year after the Soviets launched Sputnik 1, the world's first artificial satellite. NASA was designed from the start to push the bounds of space exploration with research into aerospace and aeronautics as well as with a civilian space program. In honour of World Space Week, which takes place Oct.

NASA #4. Asteroid Asteroids are chunks of rock or metal that used to be parts of other small planets that have broken off due to a collision in space and now orbit the sun. The word asteroid means "star-like," referring to their emission of light. Asteroids can be lumped into orbital groupings called families and form into an asteroid belt.

NASA // Wikimedia Commons #8. Black hole Made famous by Einstein's theory of general relativity, a black hole is the small dense core remnant of a dead star. Since the density of this core is more than about three times more than the density of the sun, the strong force of gravity produces a black hole.

Gh5046 // Wikimedia Commons #12. Constellation One of the first things we learn about space is its many constellations. From Orion and his belt to the mythical Seven Sisters and the Big and Little Dipper, constellations map out a group of stars that form shapes in the sky. Explorers first used constellations to map directions as well as a tool for storytelling.

NASA #16. Eclipse An eclipse refers to one body in space moving into the shadow of another body. Eclipses can exist in two forms—solar and lunar—depending on the orbit of the Earth and moon. With a lunar eclipse, the moon moves behind the Earth. During a solar eclipse, the moon orbits between the Earth and the sun.

Department of Energy. Office of Public Affairs // Wikimedia Commons #20. Fermi paradox Named after Italian-American physicist Enrico Fermi, the Fermi paradox is a theory using statistical analysis to postulate why we have yet to see signs of life on other planets within our galaxy. The paradox assesses the likeliness that there are similar planets to Earth within the Milky Way, and likely have the ability to support life, yet no signs of life have been found which means it's a paradox.

Bruno Gilli/ESO // Wikimedia Commons #24. Hypergalaxy A hypergalaxy consists of one large dominant galaxy surrounded by various smaller tertiary galaxies. The Milky Way and our neighbouring Andromeda galaxies are both hypergalaxies. Navicore // Wikimedia Commons #28. Meteor A meteor is a rocky object or asteroid that vaporizes when entering the Earth's atmosphere. They're often called "shooting stars" and provide a beautiful glowing tail as they enter the atmosphere. Next time you see one, be sure to make a wish upon a meteor!

Internet Archive Book Images // Wikimedia Commons #32. Nebular hypothesis The Nebular hypothesis is the most widely accepted theory of how our solar system was born. The theory itself was born during the Scientific Revolution from the 16th to 18th centuries. The theory's essence states that our solar system was birthed from a nebula billions of years ago. The theory has also been applied to how all stars came to be.

NASA #36. Parallax Measuring using parallax involves estimating the distance of nearby celestial objects by measuring movement against more distant celestial objects. This method is often used when measuring distances of neighbouring stars, called stellar parallax. NASA #40. Solar system A solar system is a gravitationally bound system of a sun and the objects that orbit it. That includes the bodies that orbit the objects orbiting the sun. For example, our solar system contains the sun, the planets that orbit it, as well as moons and other objects that orbit them.

NASA #44. Star cluster In the same way that planets can be gravitationally bound to the sun, causing them to orbit it, stars can also cluster together due to gravity. Two types of star clusters can be determined: globular clusters and open clusters. Globular clusters are tight clusters of thousands of older stars, whereas open clusters are made up of a few hundred very young stars.

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