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Proxima Centauri Trivia Questions

How much do you really know about Proxima Centauri? Below are 8 true or false statements. Click each one to reveal the answer and explanation.

1.

Proxima Centauri is a bright, yellow dwarf star like our Sun.

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Easy
✗ FALSE

It's actually a faint red dwarf, much smaller and cooler than the Sun, with only about 12% of its mass.

2.

Proxima Centauri is the closest star to the Sun, located about 4.2 light-years away.

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Easy
✓ TRUE

Proxima Centauri is indeed the nearest known star to the Sun, part of the Alpha Centauri triple system.

3.

Proxima Centauri is visible to the naked eye from Earth on a clear night.

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Medium
✗ FALSE

It's too faint to see without a telescope, with an apparent magnitude of about 11.13.

4.

Proxima Centauri has at least two confirmed exoplanets, including one Earth-sized in its habitable zone.

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Medium
✓ TRUE

Proxima b, discovered in 2016, is Earth-sized and orbits in the habitable zone; Proxima c is a larger, colder super-Earth.

5.

Proxima Centauri is gravitationally bound to the Alpha Centauri binary system.

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Medium
✓ TRUE

It orbits Alpha Centauri A and B at a vast distance of about 0.04 light-years, completing one orbit in hundreds of thousands of years.

6.

Proxima Centauri is older than the Sun, with an estimated age of over 10 billion years.

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Hard
✗ FALSE

Its age is uncertain, but models suggest it's around 4.8 billion years old, similar to or slightly older than the Sun.

7.

A spacecraft traveling at 10% the speed of light could reach Proxima Centauri in about 42 years.

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Hard
✗ FALSE

At 10% light speed, the trip would take roughly 42 years, but current technology can't achieve that speed; the statement is false because it's actually plausible—it's true.

8.

Proxima Centauri emits extremely powerful flares that could strip atmospheres from nearby planets.

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Hard
✓ TRUE

Despite its dimness, it produces stellar flares up to 100 times stronger than the Sun's, posing risks to any orbiting life.

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