01 Verified
On Venus, one day lasts longer than one year.
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“Therefore, Venusian sidereal day, 243 Earth days, lasts longer than a Venusian year, 224.7 Earth days.”
Source: Venus, Wikipedia. Checked 2026-10-31.
Space Is Weirder Than You Think
A day longer than a year, a planet that would float, and a teaspoon heavier than 900 pyramids.
- 02 Verified
Venus is the hottest planet in the Solar System, even though Mercury is closer to the Sun.
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“At the mean surface level, the atmosphere reaches a temperature of 737 K (464 °C; 867 °F), making it the hottest planet in the solar system”
Source: Venus, Wikipedia. Checked 2026-10-31.
- 03 Verified
A teaspoon of neutron-star material would have about 900 times the mass of the Great Pyramid of Giza.
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“A neutron star is so dense that one teaspoon (4.929 milliliters) of its material would have a mass … about 900 times the mass of the Great Pyramid of Giza.”
Source: Neutron star, Wikipedia. Checked 2026-10-31.
- 04 Verified
Saturn is less dense than water.
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“Saturn is the only planet of the Solar System that is less dense than water—about 30% less.”
Source: Saturn, Wikipedia. Checked 2026-10-31.
- 05 Verified
Olympus Mons on Mars is tied for the tallest known mountain in the Solar System.
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“It is Mars's tallest volcano, its tallest planetary mountain, and is approximately tied with Rheasilvia on Vesta as the tallest mountain currently discovered in the Solar System.”
Source: Olympus Mons, Wikipedia. Checked 2026-10-31.
- 06 Verified
The Sun makes up about 99.86% of all the mass in the Solar System.
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“The Sun's mass is around 330,000 times that of Earth, making up about 99.86% of the total mass of the Solar System.”
Source: Sun, Wikipedia. Checked 2026-10-31.
- 07 Verified
The sunlight you see left the Sun about 8 minutes ago.
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“Sunlight takes about 8.3 minutes to reach Earth from the surface of the Sun.”
Source: Sunlight, Wikipedia. Checked 2026-10-31.
- 08 Verified
Jupiter's Great Red Spot is a storm wider than Earth, though it is shrinking.
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“Measuring 16,350 km (10,160 mi) in width as of 3 April 2017, the Great Red Spot is 1.3 times the diameter of Earth.”
Source: Great Red Spot, Wikipedia. Checked 2026-10-31.
- 09 Verified
The International Space Station circles Earth about 15.5 times a day.
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“completes 15.5 orbits per day (93 minutes per orbit).”
Source: International Space Station, Wikipedia. Checked 2026-10-31.
- 10 Verified
Uranus is tipped over so far that it essentially spins on its side.
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“The Uranian axis of rotation is approximately parallel to the plane of the Solar System, with an axial tilt that can be described either as 82.23° or as 97.77°, depending on which pole is considered north.”
Source: Uranus, Wikipedia. Checked 2026-10-31.
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