Space

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, which produces light and heat through nuclear fusion.

Front

Why do stars appear as points of light in the sky?

Back

Stars appear as points of light because they are extremely far away from Earth, making them look small and distant.

Front

What are the inner planets of our Solar System?

Back

The inner planets are Mercury, Venus, Earth, and Mars. They are closer to the Sun and have rocky surfaces.

Front

What are the outer planets of our Solar System?

Back

The outer planets are Jupiter, Saturn, Uranus, and Neptune. They are larger and mostly made of gas.

Front

What is the main difference between inner and outer planets?

Back

Inner planets have thinner atmospheres compared to outer planets.

Front

What is the fourth planet from the Sun?

Back

Mars is the fourth planet from the Sun.

Front

What factors affect how bright a star appears to an observer on Earth?

Back

The star's size and distance from Earth affect its brightness.

Front

What is the definition of a planet?

Back

A planet is a celestial body that orbits a star, is nearly round in shape, and has cleared its orbit of other debris.

Front

What is the role of gravity in space?

Back

Gravity is the force that attracts objects with mass towards each other, keeping planets in orbit around stars.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars, star clusters, dust, gas, and dark matter bound together by gravity.