Space exploration Crossword

Is the process by which two or more low-mass atomic nuclei fuse to form heavier nucleus
in which astronauts can live and control the spacecraft and communicate with earth
A series of space flights undertaken by the United States with a goal of landing a man on the moon.
a spot or patch appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings.
a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
is the leading explanation about how the universe began
axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis
an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication
the federal agency that is responsible for aerospace research, aeronautics, and the civilian space program
an expert in or student of astronomy
the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.