Explore the Wonders of the Universe
Journey through our solar system and beyond to discover planets, stars, galaxies, and other cosmic phenomena.
Our Solar System
Mercury
The smallest planet in our solar system and closest to the Sun.
Venus
Similar in size to Earth but with a toxic atmosphere of carbon dioxide.
Earth
Our home planet, the only known place in the universe with life.
Mars
The Red Planet, home to the tallest volcano in the solar system.
Jupiter
The largest planet in our solar system, a gas giant with a Great Red Spot.
Saturn
Famous for its beautiful ring system made of ice and rock particles.
Uranus
An ice giant that rotates on its side, with a blue-green color.
Neptune
The windiest planet with the strongest winds in the solar system.
Famous Stars
The Sun
Our star, a nearly perfect sphere of hot plasma that provides energy for life on Earth.
Sirius
The brightest star in Earth's night sky, located in the constellation Canis Major.
Betelgeuse
A red supergiant in Orion that may go supernova within the next 100,000 years.
Deep Space Objects
Andromeda Galaxy
The nearest spiral galaxy to the Milky Way, about 2.5 million light-years away. It's on a collision course with our galaxy in about 4.5 billion years.
Orion Nebula
A diffuse nebula situated in the Milky Way, south of Orion's Belt. It's one of the brightest nebulae and is visible to the naked eye.
Sagittarius A*
The supermassive black hole at the center of our Milky Way galaxy, with a mass about 4 million times that of our Sun.
Crab Nebula
A supernova remnant and pulsar wind nebula in the constellation of Taurus. The supernova explosion was observed in 1054 AD.
Amazing Space Facts
Extreme Temperatures
The temperature on Mercury can range from -173°C at night to 427°C during the day. Venus is even hotter with surface temperatures around 462°C.
Vast Distances
The nearest star to our solar system, Proxima Centauri, is about 4.24 light-years away. At current spacecraft speeds, it would take tens of thousands of years to reach it.
Time Dilation
Due to relativity, astronauts on the International Space Station age slightly slower than people on Earth—about 0.007 seconds slower for every six months.
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