Sun's Mass Dominance: The Sun contains 99.86% of all the mass in our entire Solar System.
Venusian Day Length: A day on Venus (one full rotation) lasts longer than its year (one revolution around the Sun).
Sideways Planet: Uranus spins almost completely on its side, causing each pole to experience 42 years of continuous sunlight followed by 42 years of darkness.
Valles Marineris: Mars is home to a canyon that is over 3,000 km (1,864 miles) long and 8 km (5 miles) deep, dwarfing Earth’s Grand Canyon.
Volcanic Io: Jupiter's moon Io is the most volcanically active body in the solar system, with plumes of sulfur rising hundreds of kilometers high.
Sun Particle Emission: The Sun sheds about 1.3 trillion trillion trillion particles (roughly 1 billion kilograms of matter) every second.
Titan's Atmosphere: Saturn’s moon Titan is the only moon in the solar system known to have a thick atmosphere and liquid lakes, though they are made of methane and ethane, not water.
Moonless Wanderers: Mercury and Venus are the only two planets in our solar system that have no moons.
Rings of Uranus: Voyager 2 discovered that Uranus has a system of dark, narrow rings, which were previously unknown.
Neptune's Winds: Neptune has the strongest winds recorded in the solar system, reaching speeds up to 1,500 mph (roughly 2,400 km/h).
Asteroid Belt Density: The asteroid belt is often depicted as crowded, but it is actually highly diffuse; the average distance between objects is hundreds of thousands of miles.
Ceres' Composition: The dwarf planet Ceres makes up one-third of the entire mass of the asteroid belt.
Pluto's Reclassification: Pluto was reclassified as a dwarf planet in 2006 because it has not cleared its neighboring region of other objects.
Solar System Edge: Voyager 2 reached interstellar space in 2018 after crossing the heliosphere, the bubble of magnetic fields created by the Sun.
Future Solar Collision: In about 1 sextillion years, gravitational radiation will cause the Earth's orbit to decay, causing it to spiral into the Sun.

STARS, GALAXIES, AND STELLAR EVOLUTION

Hypervelocity Star: In 2017, astronomers observed a star (LP40 365) moving at 2 million mph, roughly four times faster than the Sun's orbit, likely propelled by a supernova.
Stellar Birthplaces: Stars are born in nebula clouds, but they rarely form alone; most stars in our galaxy are in multiple-star systems.

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Question

Sun's Mass Dominance: The Sun contains 99.86% of all the mass in our entire Solar System.
Venusian Day Length: A day on Venus (one full rotation) lasts longer than its year (one revolution around the Sun).
Sideways Planet: Uranus spins almost completely on its side, causing each pole to experience 42 years of continuous sunlight followed by 42 years of darkness.
Valles Marineris: Mars is home to a canyon that is over 3,000 km (1,864 miles) long and 8 km (5 miles) deep, dwarfing Earth’s Grand Canyon.
Volcanic Io: Jupiter's moon Io is the most volcanically active body in the solar system, with plumes of sulfur rising hundreds of kilometers high.
Sun Particle Emission: The Sun sheds about 1.3 trillion trillion trillion particles (roughly 1 billion kilograms of matter) every second.
Titan's Atmosphere: Saturn’s moon Titan is the only moon in the solar system known to have a thick atmosphere and liquid lakes, though they are made of methane and ethane, not water.
Moonless Wanderers: Mercury and Venus are the only two planets in our solar system that have no moons.
Rings of Uranus: Voyager 2 discovered that Uranus has a system of dark, narrow rings, which were previously unknown.
Neptune's Winds: Neptune has the strongest winds recorded in the solar system, reaching speeds up to 1,500 mph (roughly 2,400 km/h).
Asteroid Belt Density: The asteroid belt is often depicted as crowded, but it is actually highly diffuse; the average distance between objects is hundreds of thousands of miles.
Ceres' Composition: The dwarf planet Ceres makes up one-third of the entire mass of the asteroid belt.
Pluto's Reclassification: Pluto was reclassified as a dwarf planet in 2006 because it has not cleared its neighboring region of other objects.
Solar System Edge: Voyager 2 reached interstellar space in 2018 after crossing the heliosphere, the bubble of magnetic fields created by the Sun.
Future Solar Collision: In about 1 sextillion years, gravitational radiation will cause the Earth's orbit to decay, causing it to spiral into the Sun.

STARS, GALAXIES, AND STELLAR EVOLUTION

Hypervelocity Star: In 2017, astronomers observed a star (LP40 365) moving at 2 million mph, roughly four times faster than the Sun's orbit, likely propelled by a supernova.
Stellar Birthplaces: Stars are born in nebula clouds, but they rarely form alone; most stars in our galaxy are in multiple-star systems.

I RAN OUT OF ROOM