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Across
The speed required for an object to escape the gravitational pull of a planet or other body
system with celestial bodies revolving around a star other than the sun
also known as natural satellites – orbit planets and asteroids in our solar system
Radiation zones of charged particles that surround the Earth. The shape of the Van Allen belts is determined by the Earth's magnetic field
A celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity
the force by which a planet or other body draws objects toward its center
The path of a celestial body as it moves through space
a dwarf planet in the Kuiper belt
Electromagnetic radiation of a very short wavelength and very high-energy
A star that never sets but always stays above the horizon
the planet fourth in order from the sun
A star that flares up to several times its original brightness for some time before returning to its original state
A phenomenon that occurs when the Earth passes into the shadow of the Moon
the planet third in order from the sun
An imaginary belt across the sky in which the Sun, moon, and all of the planets can always be found
the smallest planet in the Solar System and the closest to the Sun
A natural or artificial body in orbit around a planet
The highest energy, shortest wavelength form of electromagnetic radiation
The angular distance of an object above the horizon.
Down
the dimensions of height, depth, and width within which all things exist and move.
The outer part of the Sun's atmosphere
A faint red star that appears to change in brightness due to explosions on its surface
The speed required for an object to escape the gravitational pull of a planet or other body
A galaxy that gives off large amounts of energy in the form of radio waves
the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter
A large grouping of stars
the second planet from the Sun
The approximately 11-year quasi-periodic variation in frequency or number of solar active events
Two asteroids that revolve around each other and are held together by the gravity between them
It's the moon phase halfway between new moon and full moon
A term that means outside of or beyond our own galaxy
A celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite.
The collapsed core of a massive star. Stars that are very massive will collapse under their own gravity when their fuel is exhausted
Atomic nuclei (mostly protons) that are observed to strike the Earth's atmosphere with extremely high amounts of energy
A flow of charged particles that travels from the Sun out into the Solar System
A measure of the total amount of material in a body, defined either by the inertial properties of the body or by its gravitational influence on other bodies
A giant ball of hot gas that creates and emits its own radiation through nuclear fusion