Since Neptune's discovery in 1846, it has made just about three-quarters of one revolution around the Sun. Submitted by: Jeuel The pressure at the centre of the Earth is 27,000 tons per square inch. Submitted by: Jeuel
On Uranus, each pole gets around 42 years of continuous sunlight, followed by 42 years of darkness. Uranus is tipped on its side so that one pole is pointed at the Sun, so its poles are warmer than its equator.sciensational.com Submitted by: Sruthi R - Coimbatore, IndiaThe smallest planet in our Solar System is Pluto (now called 'dwarf planet' and not a true planet.) Submitted by: Sruthi R - Coimbatore, India
A cosmic year is the amount of time it takes the Sun to revolve around the center of the Milky Way, about 225 million years. Submitted by: Sruthi R - Coimbatore, India
A 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. 
The 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. Submitted by: Jacob - Ohio, Unites States.The star Sirius B is so dense, a handful of it weighs about 454,000 kgs (1 million pounds.)sciensational.com Submitted by: Chris Jimms
The Sun contains over 99.8 percent of the total material (mass) in our Solar System, while Jupiter contains most of the rest. Submitted by: Chris Jimms
The Sun is 330,330 times larger than Earth. Submitted by: Ankita Lalwani - Dubai, United Arab Emirates.
The Sun is about 149 million km (93 million mi) from Earth, yet it's 270,000 times closer than the next nearest star, which is 4.3 light years away. Submitted by: Ankita, Manaal and Anisha - Dubai, United Arab Emirates.
A neutron star is the strongest magnet in the universe. Submitted by: Colin - Portland, Oregon, United States.
A new star is born in our galaxy every 18 days.sciensational.com Submitted by: King Sid - Hyderabad, India
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. Submitted by: Angel - United States
A day on Mercury, from sunrise to sunset, lasts about six Earth months. Submitted by: Moi - Toronto, Ontario, CanadaA space vehicle must move at a rate of at least 27.35 km (17 mi) per second to escape Earth's gravity. Submitted by: Jacob Richard - Tempe, Arizona, United States
The Sun loses 360 million tonnes of material each day. Submitted by: Yvonna May
The Earth-Moon size ratio is the largest in our Solar System, excepting Pluto-Charon.sciensational.com Submitted by: Nathan Otoo - United States
The Sun travels at a speed of 250 km (155 mi) per second, but it still takes 230 million years for it to complete a single revolution of the galaxy. Submitted by: Hyde - Toronto, Ontario, Canada