Space Review Quiz

How old is the universe according to the Big Bang theory?

• 13.8 billion years

• 4.5 billion years

• 10 million years

• 100 billion years

Answer explanation

The correct age of the universe according to the Big Bang theory is 13.8 billion years, as supported by scientific evidence and observations.

What unit is often used to measure distances between objects in space?

• Astronomical units

• Kilometers

• Miles

• Light-years

Answer explanation

Light-years are often used to measure distances between objects in space due to the vast distances involved and the speed of light being the fastest known speed.

What happens to a star like our sun at the end of its life cycle?

• It remains unchanged

• It becomes a neutron star

• It expands into a red giant

• It turns into a black hole

Answer explanation

At the end of its life cycle, a star like our sun expands into a red giant, not remaining unchanged, becoming a neutron star, or turning into a black hole.

What is the boundary around a black hole called?

• Galactic nucleus

• Singularity

• Event horizon

• Photon sphere

Answer explanation

The boundary around a black hole is called the Event horizon, where the gravitational pull is so strong that not even light can escape.

Which telescope is space-based?

• Very Large Telescope

• Green Bank Telescope

• Hubble Space Telescope

• Arecibo Observatory

Answer explanation

The Hubble Space Telescope is the space-based telescope among the options provided, making it the correct choice.

Which of the following is a significant challenge in asteroid mining?

• Transporting mined materials back to Earth

• Decreasing the moon's gravitational pull

• Increasing the brightness of the sun

• Creating wormholes for faster travel

Answer explanation

The significant challenge in asteroid mining is transporting mined materials back to Earth, as it involves overcoming the vast distances and logistical complexities of space travel.

What is a major concern related to the proliferation of satellites?

• Increased sunlight reflection

• Space debris

• Global warming

• Alien invasions

Answer explanation

The major concern related to the proliferation of satellites is space debris, which poses a threat to existing satellites and spacecraft in orbit.

What is a significant challenge for human exploration of Mars?

• Lack of sunlight

• Extreme temperatures

• Absence of gravity

• Overabundance of water

Answer explanation

Extreme temperatures on Mars pose a significant challenge for human exploration due to the harsh conditions that can affect equipment and human survival.

What is NOT part of astronaut training?

• Psychological resilience

• Deep sea diving

• Technical skills

• Physical fitness

Answer explanation

Deep sea diving is NOT part of astronaut training as it is not a skill required for space missions.

What legal issue does space exploration raise?

• Sovereignty

• Land ownership on Earth

• Traffic laws

• Internet regulations

Answer explanation

Space exploration raises the legal issue of sovereignty as countries and organizations navigate ownership and control in outer space.