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Saturn's moon TitanSaturn's moon Titan has hundreds of times more oil and natural gas than all the known reserves on Earth.

Interstellar space is not complete vacuum: there are a few hydrogen atoms per cubic centimeter. Submitted by: Sruthi R -

If a pinhead-size piece of the Sun were placed on Earth, one would have to stand as far as 145 kilometers (90 miles) away to be safe. Submitted by: Sruthi R -

diamond star lucyThe star "Lucy" in constellation Centaurus is actually a huge cosmic diamond of 10 billion trillion trillion carats. Submitted by: Sruthi R -

neutron starA neutron star has such density that a teaspoonful of its matter would weigh more than all the people on Earth. Submitted by: Sruthi R -

mercury ice cratersAlthough it is closest to the Sun, Mercury has ice in its craters. Submitted by: Jeuel -

pluto charon ratioDue to its size, Pluto's moon Charon is also considered to be a double dwarf planet (two planets orbiting each other), rather than a moon orbiting its planet. Submitted by: Jeuel -

planet jupiterJupiter is so big that twice the mass of the rest of our Solar System's planets combined would still not be enough to equal its mass.

saturn ringsMade up of billions of pieces of ice, the average thickness of each of Saturn's seven giant rings only ranges from about 200 to 3000 meters.

Hellas on MarsThe deepest surface point on Mars is Hellas, about 3 km deep.

dwarf planet plutoPluto is no longer considered a planet. It is now known as a "Dwarf Planet". Submitted by: Saphira - Lancaster, Ohio, United States

The full moon always rises at sunset and sets at sunrise.

sun, jupiter and earth size comparisonAbout 1000 Earths would fit inside Jupiter - and the Sun could hold about 1000 Jupiters.

voyager 1Voyager 1 spacecraft is the farthest human-made object in the universe. Submitted by: Hyde

planet saturnThe planet Saturn has a density lower than water. So, if placed in water it would float. Submitted by: Am, Singapore

The speed of light - 299 million meters a second - would still take about 26 billion years to reach one end of the visible universe to the other. Submitted by: Nik,

planet uranusOn Uranus, each pole gets around 42 years of continuous sunlight, followed by 42 years of darkness. Submitted by: Nicci - Jacksonville, North Carolina, United States

The sky is blue because when sunlight collides with our atmosphere, colours of the shortest wavelengths (violet and blue) are scattered - and our eyes are more sensitive to see blue. Submitted by: K - New York, United States

One of Jupiter's moons is believed to grow and shrink because of the water beneath its frozen surface. Submitted by: Jay - United States

red dwarf starA dwarf star is so dense that it would take 8 men to lift a teaspoon full of its matter. Submitted by: Hades - Milledgeville, Georgia, United States

The number of neuron cells in our brain is more than the total number of stars in our galaxy. Submitted by: sidd

The planet Venus has the longest day.

The Earth is the densest planet in the solar system.

The moon orbits the Earth every 27.32 days

Every second, the Sun pumps more than a million tons of material into the space through the solar wind (electrically charged particles.)

planet venusThe planet Venus does not tilt as it goes around the Sun, so consequently, it has no seasons.

NeptuneSince Neptune's discovery in 1846, it has made just about three-quarters of one revolution around the Sun.

The pressure at the centre of the Earth is 27,000 tons per square inch.

UranusUranus is tipped on its side so that one pole is pointed at the Sun, so its poles are warmer than its equator.

The smallest planet in our solar system is Pluto (now called 'dwarf planet' and not a true planet.)

the milky way galaxyA cosmic year is the amount of time it takes the Sun to revolve around the center of the Milky Way, about 225 million years.

mercuryA day on the planet Mercury is twice as long as its year. Mercury rotates very slowly but revolves around the Sun in slightly less than 88 days.

star alpha herculesThe star Alpha Herculis is so big that 25 of our entire solar system would have to be placed end to end to equal the star's diameter.

The star Sirius B is so dense, a handful of it weighs about 454,000 kgs (1 million pounds.)

The Sun contains over 99.8 percent of the total material (mass) in our solar system, while Jupiter contains most of the rest.

The Sun is 330,330 times larger than Earth.

The sun is about 149 million kms (93 million miles) from earth, yet it's 270,000 times closer than the next nearest star, which is 4.3 light years away. Submitted by: damandude - Missouri, United States

A neutron star is the strongest magnet in the universe.

A new star is born in our galaxy every 18 days.

If a pulsar's (small star made up of densely packed neutrons) piece the size of a small coin landed on Earth, it would weigh approximately 100 million tons.

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