In Depth | Our Solar System – NASA Solar System Exploration
The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, …
In Depth | Perseids – NASA Solar System Exploration
About the Meteor Shower The Perseid meteor shower, which peaks in mid-August, is considered the best meteor shower of the year. With swift and bright meteors, Perseids frequently leave long …
In Depth | Phobos – NASA Solar System Exploration
Discovery Phobos was discovered on Aug. 17, 1877 by Asaph Hall. Overview Phobos, gouged and nearly shattered by a giant impact crater and beaten by thousands of meteorite impacts, is on a …
In Depth | Earth's Moon – NASA Solar System Exploration
Scientists have discovered that water is being released from the Moon during meteor showers. Credit: NASA's Goddard Space Flight Center Scientists also found the lunar surface releases its water when …
Directory - NASA Solar System Exploration
Oct 21, 2025 · Amit Sircar is a space enthusiast with a lifelong interest in all astronomical matters, from rocketry, to solar system exploration, to interstellar travel, to spacetime, to black holes, to dark …
Planet Compare - NASA Solar System Exploration
Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Asteroids, Comets & Meteors - NASA Solar System Exploration
Asteroids and comets – and the meteors that sometimes come from them – are leftovers from the formation of our solar system 4.6 billion years ago.
In Depth | 1P/Halley – NASA Solar System Exploration
Halley's Connection to Meteor Showers Each time Halley returns to the inner solar system its nucleus sprays ice and rock into space. This debris stream results in two weak meteor showers each year: …
Mars By the Numbers - NASA Solar System Exploration
Oct 21, 2025 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.
RPS 3D Viewer - NASA Solar System Exploration
Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.