Our solar system consists of the Sun and everything that orbits around it: eight planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune), dwarf planets, moons, asteroids, and comets.

• Sun: The center, a star providing light and heat.
• Planets: Orbit the Sun in elliptical paths.
• Moons: Orbit planets (Earth's moon, Jupiter's 79 moons, etc).
• Asteroids/Comets: Small rocky or icy bodies.

Moons (also called natural satellites) are celestial bodies that orbit planets or dwarf planets. Most planets in our solar system have moons.

• Earth's real moon name: Luna (also called "The Moon")
• Other planets: Jupiter has 79 moons (Ganymede is the largest), Saturn 83+, Mars 2, Mercury and Venus have none.

Moons may be rocky, icy, or a mix. They can have volcanoes, atmospheres, or even oceans under ice (like Europa).

1 Astronomical Unit (A.U.) is the average distance from the Earth to the Sun.
1 A.U. = about 149,597,870 km (93 million miles).
Astronomers use A.U. to measure distances inside our solar system. For example:

• Earth to Sun = 1 A.U.
• Mars to Sun ≈ 1.5 A.U.
• Jupiter to Sun ≈ 5.2 A.U.

• Proxima Centauri — The closest star to our Sun, about 4.24 light-years away.
• Alpha Centauri A & B — Two Sun-like stars, both about 4.37 light-years away.
• Barnard's Star — About 6 light-years away, a red dwarf.
• Wolf 359 — About 7.8 light-years away.

All these stars are in our Milky Way galaxy. The Sun is also a star!

Rockets work on Newton’s Third Law: For every action, there is an equal and opposite reaction.

• Burning fuel creates hot gases that are pushed out at high speed from the rocket’s nozzle (action).
• The rocket is pushed in the opposite direction (reaction) — this lifts it off the ground and into space!
• Rockets work even in space, because they carry their own fuel and oxidizer.
• Multi-stage rockets drop empty tanks to lose weight and go further.
• Inside Sattelites, The Programming language used are- C, C++, Python, JAVA and MATLAB Languages

Watch: How Rockets Work (Hindi)

Gravity is the force that pulls objects toward each other. It keeps us on Earth, makes planets orbit the Sun, and causes the Moon to orbit Earth.

• The more mass an object has, the stronger its gravity.
• The farther apart objects are, the weaker the force.

• Newton's First Law (Inertia): An object in motion stays in motion unless acted on by another force.
• Newton's Second Law: Force = mass × acceleration (F = m × a).
• Newton's Third Law: For every action, there is an equal and opposite reaction. (This is how rockets work!)
• Law of Universal Gravitation: Every mass attracts every other mass with a force.

A magnetic field is the area around a magnet or planet where magnetic forces can be felt.

• Earth has a magnetic field because of its spinning, liquid iron core.
• It protects us from the Sun’s harmful solar wind.
• Other planets (like Jupiter and Mercury) also have magnetic fields.

• Gravitational Force: Pulls objects toward each other (planets, stars, black holes).
• Magnetic Force: Acts around planets with magnetic fields (like Earth, Jupiter).
• Electrostatic Force: Acts between charged particles, important in stars and nebulae.

Black holes are regions in space where gravity is so strong that nothing, not even light, can escape.

• Formed when massive stars collapse at the end of their lives.
• Have an event horizon: the "point of no return."
• At the center is a singularity where gravity is infinite.

Dwarf planets are bodies in the solar system that are too small to be called full planets, but are not moons.

• Pluto is the most famous dwarf planet.
• Others include Eris, Haumea, Makemake, Ceres.
• Dwarf planets orbit the Sun but haven't cleared their orbital path of other debris.

• Proxima Centauri — The closest star to our Sun, about 4.24 light-years away.
• Alpha Centauri A & B — Two Sun-like stars, both about 4.37 light-years away.
• Barnard's Star — About 6 light-years away, a red dwarf.
• Wolf 359 — About 7.8 light-years away.

All these stars are in our Milky Way galaxy. The Sun is also a star!

In Drawing, Images, You Thought that Solar System is small, here is actually Comparision

• If Earth=Your Hand Size, Where is Luna (The Moon)???
• The Moon is 0.5 Km Far from you!!!!
• And Mars???
• At Market, 2Km Far
• And what about Sun???
• Size=A building and 3KM Far
• And Neptune
• 30KM Far

• Myth: Is it is true that Earth is orbit of a point which is near to sun
• According to Sources: Yes, Earth orbits the Sun in an elliptical path, meaning it has a closest point (perihelion) and a farthest point (aphelion) from the Sun. The Sun is located at one of the foci of this ellipse, according to Testbook. The perihelion, where Earth is closest to the Sun, occurs around January 3rd each year, and the aphelion, where Earth is farthest from the Sun, occurs around July 4th. Means Independence day of U.S.A, These Points are L1, L2, L3 and L4
• Myth: Is that Planets are look perfect Sphere from space- No, The Planets are slightly Georid
• Myth: That the Beautiful Nebulas, Milky Way have colors, No, There are no color in entire space
• Myth: Is Sun is Yellow, No, the Sun is white color.
• In Kupiter Velt and Astroid Belt Astroids are nears, This is wrong, almost 100000km is distance between/Astroid to next astroid.
• Myth: Eart is Flat??, Answer is No, But the testing on Earth say 10% that Earth is Flat!!!!