The planet must have been hit by an _______ or a comet.
astronomer
asteroid
celestial object
astronaut
15
It's the first time __________ had identified an exploding magnetar in another galaxy.
astronomers
asteroids
celestial objects
astronaut
15
The _________ was welcomed with joyous , resounding acclaim
pilot license
spacecraft
astronomer
astronaut
15
The six astronauts on board will spend ten days in ______.
Moon
planet
space
galaxy
15
Astronomers have discovered a distant ______.
pilot license
Earth
Sun
galaxy
15
Pluto is the farthest _______ in the solar system.
Earth
constellation
planet
orbit
15
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
asteroids
galaxy
planet
15
He earned his airline transport __________ in 2001.
pilot license
telescope
satellite
constellation
15
The ____ was shining brilliantly when all of a sudden darkness descended over the place.
planet
sun
moon
earth
15
Planet ______ is the only planet out of the eight planets in the Solar system that hosts life.
Earth
Sun
Orbit
Moon
15
The ________ makes the craters on the surface of the moon incredibly clear.
telescope
astronomer
lens
reflector
15
Studying the craters on the _____ allowed the scientists to get a better idea of how much water could be found on it.
earth
moon
sun
planet
15
The __________ Ursa Major contains the stars of the Big Dipper.
spacecraft
constellation
satellite
specks of light
15
An _____ is a regular, repeating path that one object in space takes around another one.
orbit
astronomer
asteroids
astronaut
15
The __________ disintegrated as it entered the Earth's atmosphere.