Across Earth Asteroid plane Amounting

Calif. - Astronomers prepare a tool to observe the giant asteroid the size of the aircraft. This asteroid passed by Earth at a distance will be very close. Like what?

Space.com reported, an asteroid the size of an airplane crossing the Earth closer than the moon. But the media was sure it was not a potential threat to Earth from asteroids.

"There is no danger of collision when the asteroid 2005 YU55 reach the closest distance to Earth on November 8," said astronomers.

Distance to the nearest trajectory of the asteroid is expected to reach 324,604 km from Earth, he added.

At the closest point, astronomers claim to be able to study the asteroid is better.

"Normally, objects that cross Earth's sky is too far. Yet, to this end, the science of the Earth can be observed very well," said the scientist of NASA's Jet Propulsion Laboratory Barbara Wilson in Pasadena, California.
Asteroid 2005 YU55 was found astronomers from the University of Arizona in Tucson in 2005.

Great discoveries in Stone Mountain Space

Currently, scientists are working with the Dawn spacecraft are making a big impact with a new discovery: one of the largest mountain in the solar system have been found on an asteroid!

Asteroids are chunks of rock and ice of matter in space. He was very old and was formed when the solar system was born. Most of the Solar System asteroids found between Mars the planet Jupiter - an area called Ateroid Belt.

By studying them, astronomers can study the Solar System pementukan. That's why astronomers sent Dawn spacecraft on the way to an asteroid called Vesta 4 years who are in the Asteroid Belt. Since July, Dawn is in orbit around the asteroid rock surface space shooter.

Vesta size is much smaller than the Earth. If the Earth is populated by an asteroid Vesta, the asteroid Vesta 14,000 needed to be able to fill the earth!. Well, even though only a small rock, photos captured Dawn spacecraft show that Vesta has the largest mountain in the solar system on its surface. Great mountain has a height of 20,000 feet or twice the height of the tallest mountain on Earth!.

July next year, the spacecraft Dawn will leave Vesta to Ceres, the largest asteroid in the Solar System. To explore the two spacecraft Dawn asteroid using a new type of engine called "ion control" - sounds like in Star Trek?

Glittering Dust in Space

The dust grains are of no use dirty and pointless! That's what I had in mind when he saw the dust and then clean it? But in space, the powder is an essential ingredient in star formation.

Astronomers often talk about the stars like a giant ball of gas, but there is a lot of dust. Now, let's look at the photos on this page. This photo came from an area in space where the stars - a new star was born, and was known as the Carina Nebula. Orange part is the object that fills most of the region - and all this is dust!

Unlike gas particles, dust is not only used as fuel for energy stars. But, no dust, no star will be born. The stars can form only material Keika in the area of star formation is very tight. This is where the dust grains are very important contribution in the formation of a new star.

There are several areas in the Carina Nebula are tight enough to form new stars within a few million years. And massive stars are found in the nebula could help boost gas and gas particles to come together.

Winds of massive stars are found it will blow the material to meet - like leaves and trash blowing in the wind on a windy day. Also end the lives of massive stars in a powerful explosion known as a supernova explosion. During a supernova explosion, the material will get help immediately collected and new stars may be formed soon!

Interesting fact: the combined weight of gas and dust in the Carina Nebula range of 140,000 times the gift!

Weight of an atom (Zarrah)

None of the people who will be harmed in the day when God's judgment comes. For surely he will put the scales appropriate and correct. Every practice that has humans doing nothing is lost, be it good or bad. And most mencegangkan are all human acts that have been made, but practice has been detected for only the seed weight of an atom.

QS. An-Nisa '(4): 40.

In ancient times, people understand a seed weight of an atom is equal to a mustard seed. But about science is the science of modern physics is indisputable, the modern science of seed weight of an atom is smaller than the existing sub-atomic particles. And sub-atomic million times much smaller when compared to a mustard seed. And God made a promise not to lose it.



Size of the smallest objects in the world can be verified is a seed weight of an atom, because in the Quran, Allah SWT. clearly explain either good or bad deeds will be rewarded by weight of one atom each.

What is the weight of a seed of an atom?

Man was created to discover along with the development of science and technology. Advanced technology now also used the small size of the unit Nanometer (nm). One (1) nm = 1/1.000.000 one millimeter more easily Nm was approximately equivalent to 1/50.000 thick piece of hair.

Scientists were able to capture through photographs atom seed crystal. He mentioned that a seed atom thick is roughly equivalent to 1/1.000.000 piece of thick hair. Although there are many other small objects of an atom, as neutrons, electrons, etc.. Science will continue to evolve and can be hundreds of years in the future will show up and find objects much smaller than a neutron.

Planet Uranus Rings

Uranus has a complicated planetary ring system, which is the second such system found in the Solar System after Saturn. The rings are made of extremely dark particles ranging in size from a micrometer to a fraction of a meter.

Most of the material in the ring system smoothness 9 Uranus in thin ring located a distance of from 41,000 to 52,000 km from the center of the planet. Most Uranian rings has a width of 1-10 km, whereas the epsilon ring is on the outside of Uranus is wider and more eccentric. Epsilon ring is located at a distance of 20 km - 96 km.

The particles that compose the rings of Uranus are visible from Earth has a size similar to Saturn's main rings ie ~ 1 cm - 10 m. However, the epsilon ring, its structure is composed of blocks of ice the size of meters. Epsilon ring was also found to have a gray color, with satellites Cordelia and Ophelia act as shepherd satellites for the ring. Furthermore, in all nine rings Uranus are also fine dust particles are distributed fine filler ring.

The particles that compose the rings of Uranus has a very dark color and looks dark carbonaceous asteroids and meteorites chondrites. It is estimated that the particles are composed of ice were irradiated dark, which is a complex mixture of hydrocarbons connected to the ice when formed.

Characteristics of Uranus

NO	JENIS	HASIL
1	Name Planet	Uranus
2	Kala Rotation	17,25 hours
3	Kala Revolution	84 year
4	Atmospheric	Hydrogen, Helium, Methane, Water, Ammonia, etc.
5	Satelit natural	(27) them Miranda, Ariel, Umbriel
6	distance in the Sun	3 billion miles
7	Diameter Planet	51,118 km
8	Color Planet	Green and blue

Structure Foreign Uranus

Uranus' atmosphere is composed of about 83 ± 3% hydrogen, 15 ± 3% helium, methane and hydrogen 2.3% deuterida, ammonia, water, ammonium hydrosulfide, methane (CH4).

The Uranian atmosphere can be divided into three layers in the troposphere, between -300 and altitudes of 50 kilometers and pressures from 100 to 0.1 bar (10 kPa to 10 MPa) stratosphere ketinggiannnya range between 50 and 4000 km and pressures from 0.1 to 10.10 bar (10 kPa to 10 Pa) and thermosphere / corona extends 4,000 km to as high as 50.000 km from the surface. There mesosphere.

Troposphere is the lowest part of the atmosphere and at the meeting and is characterized by temperatures that drop with altitude. Temperature dropped to about 320 K at the base of the nominal troposphere at -300 km to 53 K at 50 km.

The stratosphere is the layer of the environment where the temperature generally rises to the height of the tropopause to 53 K between 800 and 850 K on the basis of thermosphere. Stratospheric heating is caused by the absorption of UV and infrared radiation for methane and other hydrocarbons, which are formed in the atmosphere as a result of photolysis of methane.

Thermosphere and the crown is the outermost layer of the atmosphere uranium at a uniform temperature around 800-850 K.