10 Need-to-Know Things About Mercury:

MESSENGER spacecraft images have revealed portions of Mercury never seen by human eyes.

10 Need-to-Know Things About Mercury:

1. Mercury is the smallest planet in our solar system - only slightly larger than the Earth's moon.
2. It is the closest planet to the sun at a distance of about 58 million km (36 million miles) or 0.39 AU.
3. One day on Mercury (the time it takes for Mercury to rotate or spin once) takes 59 Earth days. Mercury makes a complete orbit around the sun (a year in Mercury time) in just 88 Earth days.

   MESSENGER: First to orbit Mercury.

4. Mercury is a rocky planet, also known as a terrestrial planet. Mercury has a solid, cratered surface, much like Earth's moon.
5. Mercury's thin atmosphere, or exosphere, is composed mostly of oxygen (O₂), sodium (Na), hydrogen (H₂), helium (He), and potassium (K). Atoms that are blasted off the surface by the solar wind and micrometeoroid impacts create Mercury's exosphere.
6. Mercury has no moons.
7. There are no rings around Mercury.
8. Only two spacecraft have visited this rocky planet: Mariner 10 in 1974-5 and MESSENGER, which flew past Mercury three times before going into orbit around Mercury in 2011.
9. No evidence for life has been found on Mercury. Daytime Temperatures can reach 430 degrees Celsius (800 degrees Fahrenheit) and drop to -180 degrees Celsius (-290 degrees Fahrenheit) at night. It is unlikely life (as we know it) could survive on this planet.
10. Standing on on Mercury's surface at its closest point to the sun, the sun would appear more than three times larger than it does on Earth.

10 Need-to-Know Things About the Sun

10 Need-to-Know Things About the Sun

Plasma erupts from the sun in the shape of a massive handle.

10 Need-to-Know Things About the Sun:

1. The sun is a star. A star does not have a solid surface, but is a ball of gas (92.1 percent hydrogen (H₂) and 7.8 percent helium (He)) held together by its own gravity.

   Earth compared to the sun.

2. The sun is the center of our solar system and makes up 99.8% of the mass of the entire solar system.
3. If the sun were as tall as a typical front door, Earth would be about the size of a nickel.
4. Since the sun is not a solid body, different parts of the sun rotate at different rates. At the equator, the sun spins once about every 25 days, but at its poles the sun rotates once on its axis every 36 Earth days.
5. The solar atmosphere (a thin layer of gases) is where we see features such as sunspots and solar flares on the sun.
6. The sun is orbited by eight planets, at least five dwarf planets, tens of thousands of asteroids, and hundreds of thousands to three trillion comets and icy bodies.
7. The sun does not have any rings.
8. Spacecraft are constantly increasing our understanding of the sun -- from Genesis (which collected samples of the solar wind and returned the particles to Earth) to SOHO, STEREO, THEMIS, and many more, which are examining the sun's features, its interior and how it interacts with our planet. .
9. Without the sun's intense energy there would be no life on Earth.
10. The temperature at the sun's core is about 15 million degrees Celsius (27 million degrees Fahrenheit).

10 Need-to-Know Things About Earth

10 Need-to-Know Things About Earth:

1. If the sun were as tall as a typical front door, Earth would be the size of a nickel.
2. Earth is the third planet from the sun at a distance of about 150 million km (93 million miles) or one AU.

   Spacecraft study Earth from above.

3. One day on Earth takes 24 hours (this is the time it takes the Earth to rotate or spin once). Earth makes a complete orbit around the sun (a year in Earth time) in about 365 days.
4. Earth is a rocky planet, also known as a terrestrial planet, with a solid and dynamic surface of mountains, valleys, canyons, plains and so much more. What makes Earth different from the other terrestrial planets is that it is also an ocean planet: 70 percent of the Earth's surface is covered in oceans.
5. The Earth's atmosphere is made up of 78 percent nitrogen (N₂), 21 percent oxygen (O₂) and 1 percent other ingredients -- the perfect balance for us to breathe and live. Many planets have atmospheres, but only Earth's is breathable.
6. Earth has one moon. Another name for a moon is satellite.
7. Earth has no rings.
8. Many orbiting spacecraft study the Earth from above as a whole system and together aid in understanding our home planet.
9. Earth is the perfect place for life.
10. Earth's atmosphere protects us from incoming meteoroids, most of which break up in our atmosphere before they can strike the surface as meteorites

+The Tin

IMPORTANT: 
SHOULD READ and do not ignore this message without SHARING to the other.
On Sunday a family went to picnic with a few drinks tin. Monday, two family members admitted to hospital and placed in the Intensive Care Unit space. He died on Wednesday, Autopsy results concluded it hit Leptospirosis. The virus is stuck to the tin cans are drunk, without the use of glasses / cups. Test results showed that tin was infected mice that had dried urine containing Leptospira. Highly recommended to rinse the parts evenly on all soda cans before drinking it. Cans are usually stored in the warehouse and delivered direct to retail stores without cleaning. A study shows that the top of all beverage cans more contaminated than public toilets (full of germs and bacteria.)So, clean it with water before putting mouth in order to avoid all accidents total.

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