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