The planet must have been hit by an _______ or a comet.
asteroid
celestial object
astronaut
astronomer
It's the first time __________ had identified an exploding magnetar in another galaxy.
astronaut
asteroids
astronomers
celestial objects
The _________ was welcomed with joyous , resounding acclaim
pilot license
astronaut
spacecraft
astronomer
The six astronauts on board will spend ten days in ______.
space
planet
Moon
galaxy
Astronomers have discovered a distant ______.
Sun
galaxy
pilot license
Earth
Pluto is the farthest _______ in the solar system.
Earth
planet
orbit
constellation
The displacement is independent of the distance from the observer to the ______________ and a telescope has to be slightly tilted to compensate for the distortion.
galaxy
planet
asteroids
celestial object
He earned his airline transport __________ in 2001.
pilot license
telescope
constellation
satellite
The ____ was shining brilliantly when all of a sudden darkness descended over the place.
sun
moon
planet
earth
Planet ______ is the only planet out of the eight planets in the Solar system that hosts life.
Moon
Earth
Orbit
Sun
The ________ makes the craters on the surface of the moon incredibly clear.
lens
reflector
astronomer
telescope
Studying the craters on the _____ allowed the scientists to get a better idea of how much water could be found on it.
planet
sun
moon
earth
The __________ Ursa Major contains the stars of the Big Dipper.
satellite
constellation
spacecraft
specks of light
An _____ is a regular, repeating path that one object in space takes around another one.
astronomer
astronaut
asteroids
orbit
The __________ disintegrated as it entered the Earth's atmosphere.
telescope
spacecraft
astronaut
satellite
The ______ orbits the Earth every 48 hours.
satellite
spacecraft
constellation
specks of light
