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Orbital period: 687 days

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Orbital period: 88 days

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Orbital period: 225 days

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Orbital period: 365 days

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Orbital period: 230 million years

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The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. From the surface of Mercury, the Sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter.

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Introduction Mercury's surface temperatures are both extremely hot and cold. Because the planet is so close to the Sun, day temperatures can reach highs of 800°F (430°C). Without an atmosphere to retain that heat at night, temperatures can dip as low as -290°F (-180°C). Despite its proximity to the Sun, Mercury is not the hottest [...]

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Venus is the second planet from the Sun, and our closest planetary neighbor. It's the hottest planet in our solar system, and is sometimes called Earth's twin.

At its nearest to Earth, Venus is about 24 million (about 38 million kilometers) distant. But most of the time the two planets are farther apart; Mercury, the innermost planet, actually spends more time in Earth's proximity than Venus.

According to the International Astronomical Union (IAU), the organization that names space objects, Zoozve is the first-identified quasi-satellite of a major planet. Earth also has quasi-satellites, including a small asteroid discovered in 2016.

Latif Nasser, co-host of the WNYC Studios show Radiolab, tracked down the source of the mistake with the help of Liz Landau, a NASA senior communications specialist. Nasser suggested that Skiff request that the IAU officially name the asteroid Zoozve. Skiff agreed, and the name Zoozve was approved in February 2024.

NASA's Magellan spacecraft, which ended a five-year mission to Venus in 1994, mapped the broiling surface using radar. Magellan saw a land of extreme volcanism - a relatively young surface, one recently reshaped (in geologic terms), and chains of towering mountains.

A volcanic crater named Sacajawea for Lewis and Clark's Native American guide.

A deep canyon called Diana for the Roman goddess of the hunt.

"Pancake" domes with flat tops and steep sides, as wide as 38 miles (62 kilometers), likely formed by the extrusion of highly viscous lava.

"Tick" domes, odd volcanoes with radiating spurs that, from above, make them look like their blood-feeding namesake.

Tesserae, terrain with intricate patterns of ridges and grooves that suggest the scorching temperatures make rock behave in some ways more like peanut butter beneath a thin and strong chocolate layer on Venus.

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Venus is the second planet from the Sun, and Earth's closest planetary neighbor. It's the hottest planet in our solar system.

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Earth - our home planet - is the third planet from the Sun, and the fifth largest planet. It's the only place we know of inhabited by living things.

Some of the features of our planet that make it great for sustaining life are changing due to the ongoing effects of climate change.

Earth is the only planet that has a single moon. Our Moon is the brightest and most familiar object in the night sky. In many ways, the Moon is responsible for making Earth such a great home. It stabilizes our planet's wobble, which has made the climate less variable over thousands of years.

1. Measuring Up - If the Sun were as tall as a typical front door, Earth would be the size of a nickel.

2. We're On It - Earth is a rocky planet with a solid and dynamic surface of mountains, canyons, plains and more. Most of our planet is covered in water.

3. Breathe Easy - Earth's atmosphere is 78 percent nitrogen, 21 percent oxygen and 1 percent other ingredients-the perfect balance to breathe and live.

4. Our Cosmic Companion - Earth has one moon.

5. Ringless - Earth has no rings.

6. Orbital Science - Many orbiting spacecraft study the Earth from above as a whole system-observing the atmosphere, ocean, glaciers, and the solid earth.

7. Home, Sweet Home - Earth is the perfect place for life as we know it.

8. Protective Shield - Our atmosphere protects us from incoming meteoroids, most of which break up in our atmosphere before they can strike the surface.

Discover More Topics From NASA

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Earth is the third planet from the Sun, and the fifth largest planet. It's the only place we know of inhabited by living things.

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Mars - the fourth planet from the Sun - is a dusty, cold, desert world with a very thin atmosphere. This dynamic planet has seasons, polar ice caps, extinct volcanoes, canyons and weather.

Mars has two small moons, Phobos and Deimos, that may be captured asteroids. They're potato-shaped because they have too little mass for gravity to make them spherical.

A large canyon system called Valles Marineris is long enough to stretch from California to New York - more than 3,000 miles (4,800 kilometers). This Martian canyon is 200 miles (320 kilometers) at its widest and 4.3 miles (7 kilometers) at its deepest. That's about 10 times the size of Earth's Grand Canyon.

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Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to roam the alien landscape.