Astronomical bodies pt.1
A distinctive pattern of stars used informally to organize a part of the sky.
What is a constellation?
Occurs when the Moon’s shadow falls upon Earth, which we see as the Moon blocking the Sun.
What is a solar eclipse?
A unit of distance equivalent to the distance that light travels in one year.
What is a light-year?
An astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, but not massive enough to cause thermonuclear fusion.
What is a planet?
An astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion.
What is a planet?
When Earth’s shadow falls upon the Moon.
What is a lunar eclipse?
The average distance from Earth to the Sun, slightly less than 93 million miles (150 million kilometers).
What is the astronomical unit?
A massive ball of gas that generates prodigious amounts of energy (including light) from nuclear fusion in its hot, dense core.
What is a star?
A solid body orbiting the Sun that consists of metal and rock, only a few miles in diameter.
What is an asteroid?
A brief streak of light caused by a small piece of solid matter entering Earth’s atmosphere at tremendous speed (typically 20 to 40 miles per second).
What is a meteor or shooting star?
The measure of how much an orbit deviates from being circular.
What is eccentricity?
A concentration of mass so dense that nothing — not even light — can escape its gravitational pull once swallowed up.
What is a black hole?