Solar System, Galaxy, Universe: What''s the Difference?

Many people are not clear about the difference between our Solar System, our Milky Way Galaxy, and the Universe. Let''s look at the basics. Our Solar System consists of our star, the Sun, and its orbiting planets (including Earth), along with numerous moons, asteroids, comet material, rocks, and dust.Our Sun is just one star among the hundreds of billions of stars in our

The origins of the universe facts and information

The most popular theory of our universe''s origin centers on a cosmic cataclysm unmatched in all of history—the big bang. planets, and galaxies are made of. Our existence is a clear sign that

The Nine Planets of The Solar System | Eight Planets Without Pluto

The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and

ViewSpace

ViewSpace gives you the opportunity to explore our planet, solar system, galaxy, and universe. Provided free with the support of NASA, ViewSpace is developed by a team of scientists, educators, and communication specialists who collaborate to ensure that content is accurate, up-to-date, engaging, relevant, and accessible to a wide audience.

Solar System

OverviewInner Solar SystemFormation and evolutionGeneral characteristicsSunOuter Solar SystemTrans-Neptunian regionMiscellaneous populations

The inner Solar System is the region comprising the terrestrial planets and the asteroids. Composed mainly of silicates and metals, the objects of the inner Solar System are relatively close to the Sun; the radius of this entire region is less than the distance between the orbits of Jupiter and Saturn. This region is within the frost line, which is a little less than 5 AU from the Sun.

Galaxies

Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. and other large-scale structures make up the cosmic web of matter in the universe. Our Milky Way. Our home galaxy is called the Milky Way. It''s a spiral galaxy with a disk of stars spanning more than 100,000 light-years. Earth is located

Planet Sizes and Locations in Our Solar System

Mars, the red planet, is the seventh largest planet in our solar system. Mars is about half the width of Earth, and has an equatorial diameter of about 4,221 miles (6,792 kilometers). Mars is the fourth planet from the Sun, orbiting at an average distance of 141.6 million miles (227.9 million kilometers).

Learn About the Universe With the James Webb Space Telescope

As the universe cooled, protons and neutrons combined into ionized hydrogen and helium, which had a positive charge, and eventually attracted all those negatively charged electrons. This process, known as recombination, occurred about 240,000 to 300,000 years after the Big Bang. The first planet outside our solar system, or exoplanet,

Universe

From the depths of black holes to mysterious alien worlds, embark on a journey into the darkest corners of the Universe like never before. Watch here. Search. Universe . Thirty years ago, the only planets we knew of were those in our solar system. Today we have discovered thousands more and suspect there are billions waiting to be

The Nine Planets of The Solar System | Eight Planets Without Pluto

The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond. The 9 Planets in Our Solar System. Mercury.

How many planets are there in the universe? | Astronomy

Astronomers estimate that there is roughly one exoplanet per star. in our galaxy.. Of course, some stars have many planets – our own Sun has eight. And some stars have none. But if a star lives

List of planets | Solar System, Dwarf Planets, Moons | Britannica

As the term is applied to bodies in Earth''s solar system, the International Astronomical Union (IAU) lists eight planets orbiting the Sun. Pluto also was listed as a planet until 2006. This is a list of selected planets. (See also astronomy; infrared astronomy; planetarium; radio and radar astronomy; ultraviolet astronomy.) planets of the

Universe

The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space. [21] [22] [23] The universe also includes the physical laws that

Our Solar System

Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is closest to the Sun. Neptune is the farthest.

How Many Planets are in the Universe? (A Staggering

To keep going with our estimates, this would make the number of planets in the universe 10 million times 2 quadrillion (the estimate of the number of planets in the Virgo Supercluster), which comes to 21.6 sextillion. That''s

Universe And Planets

Universe and Planets The universe and its vast expanse have been a source of wonder and fascination for humans since time immemorial. From the stars in the night sky to the complex structures of galaxies, the universe is a constant reminder of our smallness in the grand scheme of things. In this blog post, we will explore the universe and

Interactive Solar System Tour | 3D Model of the

From the asteroid belt to Jupiter''s turbulent storms, every celestial body sits ready to unfold its story. With the tour continuing to the outer reaches of the universe, you''d experience the icy solitude of the outer planets like Neptune and Uranus.

Solar system

· Solar system - Planets, Moons, Orbits: The eight planets can be divided into two distinct categories on the basis of their densities (mass per unit volume). The four inner, or terrestrial, planets—Mercury, Venus, Earth, and Mars—have rocky compositions and densities greater than 3 grams per cubic cm. (Water has a density of 1 gram per cubic cm.) In contrast,

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

Universe | NASA Space Place – NASA Science for Kids

Searching for Other Planets Like Ours. Exoplanets are far away and hard to see. How do we look for them? explore; Types of Galaxies. Explore the different types of galaxies! explore; What Is a Barycenter? And how does it help us find new planets? explore; Make Stretchy Universe Slime! Make the universe stretch and expand! do; Make a Pinwheel

Solar System Facts

The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest to the Sun, only rocky material could withstand the heat when the solar system was young. For this reason,