Gulliver’s Travels

In Gulliver’s Travels, Jonathan Swift described the two moons of Mars, Phobos and Deimos, giving their exact size and speeds of rotation. He did this more than 100 years before either moon was discovered!

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Moon diet

When the moon is directly overhead, you will weigh slightly less.

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Jupiter the core has become a metal

Jupiter's core is in fact made of a non-metal, but due to the immense pressure inside Jupiter the core has become a metal. This metal is hydrogen.

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We are just a hologram

There is a theory that our universe is nothing more than a holographic representation of the “Real” universe. That this “hologram” exists in the event horizon of a black hole.

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365 days in a year

People generally say there are 365 days in a year. By a year, I mean this is the time period it takes the earth to travel around the sun: 365 days. Actually, however, it takes the Earth 365.25 days to make this trip. In other words, for every year we gain one-fourth of a day and every for years we gain an extra day. If nothing was done about this, our calendar would move backwards one full day every four years in relation to our seasons.

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Charlie Brown effect

Why astronauts crave Tabasco sauce.  In space, bodily fluids that would normally be drawn downwards instead spread out more uniformly through the body, producing rounder heads and other odd effects.

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Moon

Moon, takes same amount of time to spin about its own axis as it takes to complete an orbits the Earth.

So, in the 27.32 days traveling around Earth, the Moon also spins about its axis one time.

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The largest known black hole has a mass of 18 billion Suns!

Located 3.5 billion light years away, this black hole is SO massive that it weighs six times as much as the previous record-holder and is contains about the same mass as a small galaxy! The gravitational field of the giant is so strong that it actually causes a smaller black hole with the mass of 100 million Suns to orbit it! At two points in every 12-year orbit, the smaller hole gets close enough to break through the matter on the outer edge of the larger hole, which causes an outburst that makes the surrounding quasar suddenly brighten. A quasar is a bright celestial object into which matter entering a black hole emits large amounts of radiation.

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Most dangerous asteroids

The most dangerous asteroids, those capable of causing major regional or global disasters, usually impact the Earth only once every 100,000 years on average.

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The Earth is not flat – but the Universe is

Based on Einstein’s Theory of General Relativity, there are three possible shapes that the Universe may take: open, closed, and flat. Once again, measurements by WMAP on the CMBR have revealed a monumental confirmation – the Universe is flat.


Combining this geometry and the idea of an invisible entity known as dark energy coincides with the widely accepted ultimate fate of our universe, which as stated earlier, is a Big Freeze.

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The most distant galaxy ever observed

The most distant galaxy ever observed is estimated to be around 13,000,000,000 light-years away. Discovered by the Hubble Space Telescope in 2004, it is located behind the galactic cluster Abell 2218, which bends the object's light. It is a small, energetic galaxy whose light that is seen on Earth now would have set out when the universe was just 750 million years old. This is the most distant object that can be observed consistently; some ephemeral gamma-ray bursts have been observed that are slightly more distant than this object.

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Number of days in millennium

The first millennium, 1 - 1000 AD, consisted of 365,250 days. Our current millennium, 1001 - 2000 AD, will consist of 365,237 days. The third millennium, 2001 - 3000 AD, will consist of 365,242 days. The reason for the differences is the calendar system that was in use during the milleniums.

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Alpha Herculis

The Star Alpha Herculis is twenty five times larger than the circumference described by the earth's revolution around the sun. This means that twenty five diameters of our solar orbit would have to be placed end to end to equal the diameter of this Star.

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Solar diet

The Sun loses up to a billion kilograms a second due to solar winds. Solar winds are charged particles that are ejected from the upper surface of the sun due to the high temperature of the corona and the high kinetic energy particles gain through a process that is not well understood at this time. Also, did you know that 1 pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers (256 mph)? [Sourced from Planet Science]

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Did you know that our galaxy is moving

Did you know that we are moving through space at the rate of 530km a second.
Our Galaxy – the Milky Way is spinning at a rate of 225 kilometers (306 miles) per second. In addition, the galaxy is travelling through space at the rate of 305 kilometers per second. This means that we are traveling at a total speed of 530 kilometers (330 miles) per second. That means that in one minute you are about 19 thousand kilometers away from where you were. Scientists do not all agree on the speed with which the Milky Way is travelling – estimates range from 130 – 1,000 km/s. It should be said that Einstein’s theory of relativity, the velocity of any object through space is not meaningful.

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Saturn is lighter than water

The density of Saturn is so low that if you were to put it in a giant glass of water it would float. The actual density of Saturn is 0.687 g/cm³ while the density of water is 0.998 g/cm³. At the equator Saturn has a radius of 60,268 ± 4 km – which means you would need an extremely large glass of water to test this out.

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