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Showing posts from April, 2013

Facts about The Sun

1. The SUN is just ONE of about 100 billion STARS in our GALAXY. 2. It has a DIAMETER of 1,390,000 km 3. Its CORE temperature is 15 million º C. 4. Its SURFACE temperature is 5,500 ºC. Cooler (3,800 ºC) surface areas are called SUN SPOTS. 5. It is the LARGEST object in the SOLAR SYSTEM and makes up 99.8% of the total MASS of the Solar System. 6. It consists of 75% HYDROGEN and 25% HELIUM. 7. The ENERGY output of the Sun is about 386 billion megawatts and is produced by NUCLEAR FUSION, using Hydrogen as fuel. 8. Apart from HEAT and LIGHT, the Sun also emits a stream of CHARGED PARTICLES called the SOLAR WIND. The Solar Wind:- a. - Causes Radio INTERFERENCE at certain times b. - Produces the AURORA BOREALIS or "The NORTHERN LIGHTS" c. - Causes the characteristic TAILS of COMETS. d. - Alters the TRAJECTORY of SPACECRAFT 9. The Sun is about 4.5 BILLION YEARS old. It will probably continue to exist in its present FORM for about another 5 BILLION YEARS before RUNNING out...

Diamond LOCATIONS

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When scientists melted diamond under high temperatures and pressure and then resolidified, the solid diamond chunks floated on top of liquid diamond   THE GIST: —  Like ice on water, solid diamond floats on liquid diamond. —  The finding explains possible liquid diamond oceans on other planets. —  Diamond oceans may cause off-kilter planetary tilts. Oceans of liquid diamond, filled with  solid diamond  icebergs, could be floating on Neptune and Uranus, according to a recent article in the journal  Nature Physics . The research, based on the first detailed measurements of the melting point of diamond, found diamond behaves like water during freezing and melting, with solid forms floating atop liquid forms. The surprising revelation gives scientists a new understanding about diamonds and some of the most distant planets in our solar system. "Diamond is a relatively common material on Earth, but its melting point has never ...

In Neptune and Uranus it literally rains diamonds!

Uranus and Neptune may literally rain diamonds, which then pile up miles-thick. And those are not the only diamonds being produced in space. You or may not know that there are some planets covered in diamonds. Well some planetary scientists think we just might have a few of them in this very system. These scientists believe that Uranus and Neptune might actually rain diamonds to such a degree that they’re piled up miles above ground level. Both of those planets are nearly four times as big as this one, too. How could it happen? Well you probably know diamonds are created due to extreme pressure. The atmospheres of both planets contain methane, which is a hydrocarbon. The atmospheres, which are extremely dense, have temperatures up to 12,000 degrees fahrenheit and pressures up to 6 million times that of our own atmosphere. Basically all that means is the intense pressure and temperature of the planets turns the methane in the atmosphere to diamonds- raining diamonds from the sky....

What is a Solar Flare?

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A flare is defined as a sudden, rapid, and intense variation in brightness. A  solar flare  occurs when magnetic energy that has built up in the  solar atmosphere  is suddenly released.  Radiation  is emitted across virtually the entire  electromagnetic spectrum , from radio waves at the long  wavelength  end, through  optical  emission to  x-rays  and  gamma rays  at the short wavelength end. The amount of energy released is the equivalent of millions of 100- megaton  hydrogen bombs exploding at the same time! The first solar flare recorded in astronomical literature was on September 1, 1859. Two scientists, Richard C. Carrington and Richard Hodgson, were independently observing  sunspots  at the time, when they viewed a large flare in  white light .  Soft x-ray image of a solar flare on the Sun As the magnetic energy is being released, particles, including  electrons ,  ...

SOLAR FLAME

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A  solar flare  is a sudden brightening observed over the  Sun 's surface or the solar limb, which is interpreted as a large energy release of up to 6 × 10 25   joules  of energy  (about a sixth of the  total energy output of the Sun each second  or 160,000,000,000 megatons of TNT equivalent, over 25,000 times more energy than released from the impact of  Comet Shoemaker–Levy 9  with Jupiter). They are mainly followed by a colossal  coronal mass ejection  also known as a CME. [1]  The flare ejects clouds of electrons, ions, and atoms through the corona of the sun into space. These clouds typically reach  Earth  a day or two after the event. [2]  The term is also used to refer to similar phenomena in other stars, where the term  stellar flare  applies. Solar flares affect all layers of the solar atmosphere ( photosphere ,  chromosphere , and  corona ), when the  plasma  medi...

Jupiter

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Jupiter   The Bringer of Jollity Jupiter is the fifth planet from the Sun and by far the largest. Jupiter is more than twice as  massive  as all the other planets combined (the mass of Jupiter is 318 times that of Earth). orbit : 778,330,000 km (5.20 AU ) from Sun diameter : 142,984 km (equatorial) mass : 1.900e27 kg Jupiter  (a.k.a. Jove; Greek  Zeus ) was the King of the Gods, the ruler of Olympus and the patron of the Roman state. Zeus was the son of  Cronus  (Saturn). Jupiter is the fourth  brightest  object in the sky (after the  Sun , the  Moon  and  Venus ). It has been known since prehistoric times as a bright "wandering star". But in 1610 when  Galileo  first pointed a telescope at the sky he discovered Jupiter's four large moons  Io ,  Europa ,  Ganymede  and  Callisto  (now known as the  Galilean  moons) ...

The Interplanetary Medium

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   The space between the planets is far from empty. It contains: electromagnetic  radiation  (photons); hot  plasma  (electrons, protons and other ions) a.k.a. the  solar wind ; cosmic rays; microscopic  dust  particles; and  magnetic fields  (primarily the Sun's). While the  Sun 's radiation is obvious, the other components of the interplanetary medium were not discovered until very recently. The temperature of the interplanetary medium is about 100,000 K. Its density is about 5 particles/cm3 near the Earth and decreases by an inverse square law farther from the Sun. However, the density is highly variable, it can be as much as 100 particles/cm3. Though very tenuous, it has measurable effects on the paths of spacecraft. Except near some of the planets, interplanetary space is filled with the Sun's magnetic field. Its interactions with the solar wind are very complicated. Within a few solar radii of the Sun...