Among these planets, which one is the biggest:
Neptune
Venus
Earth
Jupiter
A fixed luminous point in the night sky which is a large, remote body like the sun:
star
A vehicle or device designed for travel or operation outside the earth's atmosphere:
spacecraft
How many Earths could fit inside the sun?
One thousand
One billion
One hundred thousand
One million
TRUE OR FALSE? The moon is slowly moving closer to our planet, which has made the days on Earth to become shorter and shorter. In the past, the days used to last 60 hours.
False! The moon is moving away from us, 1.4 billion years ago our days lasted around 18 hours, can you imagine??
A small rocky body orbiting the sun:
an asteroid
A collection of stars and planets that are held together by gravity:
galaxy
The natural satellite of the Earth, visible usually at night by reflected light from the sun:
moon
The collection of eight planets and their moons in orbit around the sun, together with smaller bodies:
solar system
All of space and everything in it including stars, planets, galaxies, etc:
universe
TRUE OR FALSE? Because of the lack of gravity, astronauts get shorter in outer space.
FALSE! Astronauts can grow about 5 centimeters during their stay in space. The reason for this is the lack of gravity which expands the disks of their spines.
A room or building housing an astronomical telescope or other scientific equipment for the study of natural phenomena:
observatory
TRUE OR FALSE? Space is completely silent.
TRUE, there is no air or atmosphere in space. Since it is a vacuum, sound waves will have no medium to travel to. That means, no one will hear you in space.
Which planet is closest to the sun?
Mars
Mercury
Jupiter
Saturn
TRUE OR FALSE: When you look at a star, what you see is actually what it looked like in that past.
TRUE: Light takes time to reach Earth. For instance, sunlight takes about 8.5 minutes to reach the Earth’s surface.
An object we use to make things that are very far away appear to be closer to us:
telescope