Hardest Space Trivia

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| By Year7
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Year7
Community Contributor
Quizzes Created: 2 | Total Attempts: 38,216
Questions: 10 | Viewed: 38,037

1.

Which planet has the largest rings?

Answer: Saturn
Explanation:
Saturn is known for its extensive and complex ring system, which is the largest in the solar system. These rings are made up of countless small particles of ice and rock, ranging in size from tiny dust grains to objects as large as mountains. The rings extend thousands of kilometers from the planet but are relatively thin, only about 10 meters thick in most places. Saturn's rings are divided into seven main groups named alphabetically in the order they were discovered.
2.

What planet was recently discovered?

Answer: HD 109833 b
Explanation:
HD 109833 b is an exoplanet that was recently discovered orbiting a star named HD 109833. Exoplanets are planets that exist outside our solar system. HD 109833 b is of particular interest to astronomers because it helps us learn more about the variety of planetary systems in our galaxy. The discovery of new exoplanets like HD 109833 b expands our understanding of the universe and the potential for finding Earth-like planets.
3.

What planet is the furthest from Neptune? 

Answer: Mercury
Explanation:
Mercury is the planet that is furthest from Neptune. In the solar system, the planets are arranged in the following order from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Since Neptune is the eighth planet from the Sun and Mercury is the first, they are at opposite ends of the planetary lineup, making Mercury the furthest from Neptune.
4.

What is the hottest planet in the solar system?

Answer: Venus 
Explanation:
Venus is the hottest planet in the solar system due to its thick atmosphere composed mainly of carbon dioxide. This atmosphere creates a greenhouse effect, trapping heat and causing the planet's surface temperature to reach extremely high levels. Additionally, Venus is closer to the Sun compared to other planets, which further contributes to its high temperatures.
5.

Which planet is also called "The Diamond" plant?

Answer: 55 Cancri e
Explanation:
55 Cancri e is also known as "The Diamond" planet because it is believed to be composed mostly of carbon, which under extreme pressure and temperature conditions can form diamonds. This planet is located around 40 light-years away from Earth and orbits a star called 55 Cancri. It is a super-Earth, meaning it is larger and more massive than Earth but smaller than gas giants like Jupiter. The high carbon content in its composition has led scientists to speculate that the planet's surface may be covered in graphite and diamond.
6.

Which planet in our solar system does not have a moon?

Answer: Venus 
Explanation:
Venus is one of the two planets in our solar system that does not have any moons, the other being Mercury. Unlike other planets that have one or more natural satellites, Venus and Mercury lack such companions. Scientists believe that the reasons might include their proximity to the Sun, which creates strong gravitational forces that make it difficult for these planets to capture and retain moons.
7.

How many moons does Saturn have? 

Answer: 146
Explanation:
Saturn has 146 known moons, making it the planet with the most moons in our solar system. These moons vary greatly in size and characteristics, ranging from small moonlets only a few kilometers across to large moons like Titan, which is larger than the planet Mercury. Saturn's moons are diverse and include icy bodies, rocky satellites, and even moons with substantial atmospheres. The large number of moons contributes to the complex and fascinating nature of the Saturnian system.
8.

How many galaxies have been recorded in the observable universe? 

Answer: 2,000,000,000,000 galaxies
Explanation:
Astronomers estimate that there are approximately 2 trillion (2,000,000,000,000) galaxies in the observable universe. This estimate comes from observations made by telescopes such as the Hubble Space Telescope, which have provided deep field images showing a vast number of galaxies. Each galaxy can contain millions or even billions of stars, along with planetary systems. This immense number highlights the vastness of the universe and the potential for countless astronomical discoveries.
9.

Which planet is known as the "Red Planet"?

Answer: Mars
Explanation:
Mars is commonly referred to as the "Red Planet" due to its reddish appearance, which is caused by iron oxide, or rust, on its surface. This distinctive color can be seen even with the naked eye from Earth. Mars has been a focus of scientific exploration because of its potential to have once supported life. It has the largest volcano in the solar system, Olympus Mons, and a canyon system called Valles Marineris. The planet's thin atmosphere, composed mostly of carbon dioxide, and its surface conditions make it a challenging environment for human habitation.
10.

What is the smallest planet in our solar system?

Answer: Mercury
Explanation:
Mercury is the smallest planet in our solar system. It has a diameter of about 4,880 kilometers, which is roughly one-third the size of Earth. Mercury is the closest planet to the Sun and has a very thin atmosphere, leading to extreme temperature variations between day and night. Despite its small size, Mercury has a large iron core, which makes up a significant portion of its mass. Its surface is covered with craters, similar to our Moon, due to numerous impacts from asteroids and comets.
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