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Astronomy Facts & Trivia - Page 2

mercuryThe temperature on Mercury varies so extremely that it will rise up to 430C during the day and drop as low as -140C at night. Sciensational.comSubmitted by: King Sid - Hyderabad, India

Canis Majoris and SunThe largest known star Canis Majoris is so big that if our Sun were a ball 117cm (46in) wide, Canis Majoris would be 2.25 kilometers (1.3 miles) wide. Sciensational.comSubmitted by: Colin - Portland, Oregon, United States.

venusDespite being closest to the sun, Mercury is not the hottest planet. The hottest planet is Venus (at 462 Celsius). Sciensational.comSubmitted by: Erik Halenkamp - Naples, Italy

Pistol StarThe Pistol Star is the most luminous star known - 10 million times the power of the Sun and as big as the size of Earth's entire orbit around the Sun. Sciensational.comSubmitted by: Ankita, Manaal and Anisha - Dubai, United Arab Emirates.

MarsMars is red because its soil is very rusty (iron oxide.) Submitted by: Ankita Lalwani - Dubai, United Arab Emirates.

Constellation CruxCrux is the smallest of modern constellations, with only 4 bright stars. Sciensational.comSubmitted by: Chris Jimms

Constellation HydraThe largest of modern constellations is Hydra. Submitted by: Chris Jimms

Earth is the only planet not named after a Roman or Greek god. Sciensational.comSubmitted by: Jacob - Ohio, Unites States.

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. Sciensational.comSubmitted by: Sruthi R - Coimbatore, India

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. Sciensational.comSubmitted by: Sruthi R - Coimbatore, India

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

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 - Coimbatore, India

mercury ice cratersEven though it is closest to the Sun, Mercury has ice in its craters. Sciensational.comSubmitted 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. Sciensational.comSubmitted 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. Sciensational.com

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". Sciensational.comSubmitted by: Saphira - Lancaster, Ohio, United States

The full Moon always rises at sunset and sets at sunrise. Sciensational.com