solar system

Question 1

nebula

Answer 1

A nebula is a distinct body of interstellar clouds. Originally, the term was used to describe any diffused astronomical object, including galaxies beyond the Milky Way

Question 2

solar nebula

Answer 2

Solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.

Question 3

nuclear fusion

Answer 3

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles

Question 4

sunspot

Answer 4

Sunspots are temporary phenomena on the Sun’s photosphere that appear as spots darker than the surrounding areas

Question 5

terrestrial planets

Answer 5

A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals

Question 6

prograde rotation

Answer 6

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object

Question 7

retrograde

Answer 7

Retrograde refers to an object that spins in the opposite direction of its orbit. Earth has a prograde rotation, and asteroid Bennu has a retrograde rotation, which means the two bodies rotate in opposite directions.

Question 8

gas giant

Answer 8

A gas giant is a giant planet composed mainly of hydrogen and helium. Gas giants are also called failed stars because they contain the same basic elements as a star. Jupiter and Saturn are the gas giants of the Solar System

Question 9

new moon

Answer 9

In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude

Question 10

waxing crescent

Answer 10

The Waxing Crescent is an intermediate phase of the Moon, which starts after the New Moon and lasts until the First Quarter

Question 11

first quarter moon

Answer 11

First quarter: The moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view.

Question 12

waxing gibbous

Answer 12

Bottom line: A waxing gibbous moon is in the sky when darkness falls. It lights up the early evening

Question 13

full moon

Answer 13

the phase of the moon in which its whole disk is illuminated

Question 14

waning gibbous

Answer 14

The Waning Gibbous is an intermediary Moon phase. It starts right after the Full Moon, and it lasts until the Third Quarter

Question 15

last quarter moon

Answer 15

A last quarter moon appears half-lit by sunshine and half-immersed in its own shadow. It rises in the middle of the night, appears at its highest in the sky around dawn

Question 16

waning crecsent

Answer 16

The Waning Crescent phase occurs when the illumination of the Moon decreases from 49.9% to 0.1%. It is an intermediary phase between the Third Quarter and the New Moon

Question 17

solar eclipse

Answer 17

A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight

Question 18

lunar eclipse

Answer 18

A lunar eclipse occurs when the Moon moves into the Earth’s shadow

Question 19

comet

Answer 19

A comet is an icy, small Solar System body that, when passing close to the Sun

Question 20

asteroid

Answer 20

An asteroid is a minor planet of the inner Solar System. Historically, these terms have been applied to any astronomical object orbiting the Sun that did not resolve into a disc

Question 21

asteroid belt

Answer 21

The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mar

Question 22

meteoroid

Answer 22

A meteoroid is a small rocky or metallic body in outer space. Meteoroids are significantly smaller than asteroids

Question 23

meteorite

Answer 23

A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space

Question 24

meteor

Answer 24

A meteoroid is a small rocky or metallic body in outer space. Meteoroids are significantly smaller than asteroids, and range in size from small grains to one-meter-wide objects