In Depth | Our Solar System – NASA Solar System Exploration
Most of the hundreds of billions of stars in our galaxy are thought to have planets of their own, and the Milky Way is but one of perhaps 100 billion galaxies in the universe. While our planet is in some ways a mere speck in the vast cosmos, we have a lot of company out there.
What is a Planet? | Planets – NASA Solar System Exploration
Researchers have found hundreds of extrasolar planets, or exoplanets, that reside outside our solar system; there may be billions of exoplanets in the Milky Way Galaxy alone, and some may be habitable (have conditions favorable to life).
RPS 3D Viewer - NASA Solar System Exploration
2024年11月20日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Planet Compare - NASA Solar System Exploration
2024年11月20日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
In Depth | Sun – NASA Solar System Exploration
The Sun is located in the Milky Way galaxy in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.
In Depth | Mars – NASA Solar System Exploration
The fourth planet from the Sun, Mars is one of Earth's two closest planetary neighbors (Venus is the other). Mars is one of the easiest planets to spot in the night sky – it looks like a bright red point of light.
Pluto By the Numbers – NASA Solar System Exploration
2024年11月20日 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.
SINISTER SOLAR SYSTEM – NASA Solar System Exploration
2024年10月24日 · In dark corners of the galaxy are worlds fit for creatures of the night. Explore the homes of Frankenstein’s monster, Dracula’s lair, the place where zombies roam, and more. Take a journey to these dark and sinister worlds
The Solar System and Beyond is Awash in Water
2015年4月6日 · Earth isn't the only ocean world in our solar system. Oceans could exist in diverse forms on moons and dwarf planets, offering clues in the quest to discover life beyond our home planet. This illustration depicts the best known candidates in …
The Usual Suspects: a Rogues Gallery of Asteroids, Comets and …
2018年11月15日 · Here’s a lineup of the various kinds of small bodies that orbit the Sun and sometimes impact planets and each other.