In Depth | Our Solar System – NASA Solar System Exploration
Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
In Depth | Sun – NASA Solar System Exploration
The Sun is the largest object in our solar system. Its diameter is about 865,000 miles (1.4 million kilometers). Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it.
Earth's Moon 3D Model – NASA Solar System Exploration
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understand our immense solar system. The Standard Model of the Sun (see Figure 1) makes it possible for scientists to estimate the temperature profile of the sun. Data from the sun's profile (see Figure 2) make it possible to make observations, predictions, and to compare these predictions based on the Standard Solar Model.
RPS 3D Viewer - NASA Solar System Exploration
Oct 24, 2024 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
What is a Planet? | Planets – NASA Solar System Exploration
A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.
In Depth | Earth's Moon – NASA Solar System Exploration
The Moon makes a complete orbit around Earth in 27 Earth days and rotates or spins at that same rate, or in that same amount of time. Because Earth is moving as well – rotating on its axis as it orbits the Sun – from our perspective, the Moon appears to orbit us every 29 days.
In Depth | Neptune – NASA Solar System Exploration
Neptune is one of two ice giants in the outer solar system (the other is Uranus). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core.
Genesis : Search for Origins | JPL | NASA - NASA Solar System …
These differences may provide scientists with clues into how the solar nebula of swirling gas, dust and ice formed into planets. They have made models of the process of planet formation. To best test these models, they need to know the starting conditions.
In October 2001, the Voyage Scale Model Solar System opened in Washington, DC, displaying a one to ten billion scale of the sizes of the Sun and planets, and the distances between them.