Astronomy Terminology
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Questions and Answers

What is the difference between absolute magnitude and apparent magnitude?

Absolute magnitude is a measure of an object's true brightness at a standard distance, while apparent magnitude is how bright an object appears from Earth.

Define a black hole in spacetime.

A region in spacetime where gravity is so strong that not even light can escape.

What is a constellation?

A group of stars that form a recognizable pattern in the night sky.

Explain the concept of parallax in astronomy.

<p>Parallax is the apparent shift in the position of a nearby star relative to more distant stars, caused by Earth's movement around the Sun.</p> Signup and view all the answers

What is a supernova?

<p>The explosion of a massive star at the end of its life, which can briefly outshine an entire galaxy.</p> Signup and view all the answers

Define a satellite in astronomy.

<p>A natural object that orbits a planet or another celestial body.</p> Signup and view all the answers

A(n) ______ is a rocky leftover from the formation of our solar system, orbiting the Sun but too small to be a planet

<p>asteroid</p> Signup and view all the answers

The ______ is the projection of Earth's equator onto the sky, dividing the northern and southern celestial hemispheres

<p>celestial equator</p> Signup and view all the answers

A group of stars that form a recognizable pattern in the night sky, like Orion or Ursa Major (Great Bear), is called a(n) ______

<p>constellation</p> Signup and view all the answers

The distance light travels in one year, used to measure vast astronomical distances (about 9.5 trillion kilometers), is known as a(n) ______

<p>light-year</p> Signup and view all the answers

A giant cloud of gas and dust in space, where new stars are born or old stars die, is referred to as a(n) ______

<p>nebula</p> Signup and view all the answers

A small, cool star with a reddish hue, the most common type of star in the Milky Way galaxy, is a(n) ______ dwarf

<p>red</p> Signup and view all the answers

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