Family Fun

Are there planets orbiting other stars beyond our solar system? We do not know for sure, but with the recent discoveries about 51 Pegasi, 70 Virginis and 47 Ursae Majoris the weight of evidence is now so strong that only a "devil's advocate" denies t...

Are there planets orbiting other stars beyond our ...

Many small irregular jovian satellites have been discovered recently. Many new moons of Saturn and Uranus are also showing up.Callirrhoe (S/1999 J1) was discovered by the Spacewatch project and the Minor Planet Center in 2000 from images taken in 199...

Many small irregular jovian satellites have been d...

Callisto ("ka LIS toh") is the eighth of Jupiter's known satellites and the second largest. It is the outermost of the Galilean moons. orbit: 1,883,000 km from Jupiterdiameter: 4800 kmmass: 1.08e23 kg Callisto was a nymph, beloved of Zeus and hated b...

Callisto ("ka LIS toh") is the eighth of Jupiter's...

Ganymede ("GAN uh meed") is the seventh and largest of Jupiter's known satellites. Ganymede is the third of the Galilean moons. orbit: 1,070,000 km from Jupiterdiameter: 5262 kmmass: 1.48e23 kg Ganymede was a Trojan boy of great beauty whom Zeus carr...

Ganymede ("GAN uh meed") is the seventh and larges...

Europa ("yoo ROH puh") is the sixth of Jupiter's known satellites and the fourth largest; it is the second of the Galilean moons. Europa is slightly smaller than the Earth's Moon. orbit: 670,900 km from Jupiterdiameter: 3138 kmmass: 4.80e22 kg Europa...

Europa ("yoo ROH puh") is the sixth of Jupiter's k...

Io ( "EYE oh" ) is the fifth of Jupiter's known satellites and the third largest; it is the innermost of the Galilean moons. Io is slightly larger than Earth's Moon. orbit: 422,000 km from Jupiterdiameter: 3630 kmmass: 8.93e22 kg The pronunciation "E...

Io ( "EYE oh" ) is the fifth of Jupiter's known sa...

The title The Nine Planets is somewhat misleading. In addition to the (eight) planets and their satellites the solar system contains a large number of smaller but interesting objects.There are thousands of known asteroids and comets and undoubtedly m...

The title The Nine Planets is somewhat misleading....

Mars is the fourth planet from the Sun and the seventh largest: orbit: 227,940,000 km (1.52 AU) from Sundiameter: 6,794 kmmass: 6.4219e23 kg Mars (Greek: Ares) is the god of War. The planet probably got this name due to its red color; Mars is sometim...

Mars is the fourth planet from the Sun and the sev...

The Moon is the only natural satellite of Earth: orbit: 384,400 km from Earthdiameter: 3476 kmmass: 7.35e22 kg Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies.The Moon, of course, has been known ...

The Moon is the only natural satellite of Earth: o...

Earth is the third planet from the Sun and the fifth largest: orbit: 149,600,000 km (1.00 AU) from Sundiameter: 12,756.3 kmmass: 5.972e24 kg Earth is the only planet whose English name does not derive from Greek/Roman mythology. The name derives from...

Earth is the third planet from the Sun and the fif...

Venus is the second planet from the Sun and the sixth largest. Venus' orbit is the most nearly circular of that of any planet, with an eccentricity of less than 1%. orbit: 108,200,000 km (0.72 AU) from Sundiameter: 12,103.6 kmmass: 4.869e24 kg Venus ...

Venus is the second planet from the Sun and the si...

Mercury is the closest planet to the Sun and the eighth largest. Mercury is slightly smaller in diameter than the moons Ganymede and Titan but more than twice as massive. orbit: 57,910,000 km (0.38 AU) from Sundiameter: 4,880 kmmass: 3.30e23 kg In Ro...

Mercury is the closest planet to the Sun and the e...

Our Sun is a normal main-sequence G2 star, one of more than 100 billion stars in our galaxy. diameter: 1,390,000 km. mass: 1.989e30 kg temperature: 5800 K (surface) 15,600,000 K (core) The Sun is by far the largest object in the solar system. It cont...

Our Sun is a normal main-sequence G2 star, one of ...

Reading the verses of Qur'an especially the 68th verse of Zumar the Companies - the 39th Surah - , we find out that at the end of the time and at the begining of the resurrection,two sudden phenomena shall be taken place.All the living creatures shal...

Reading the verses of Qur'an especially the 68th v...

Whenever the amounts of percipitation is in excess of the Sum of evaporation,penetration and crater collections capacity,the excess waters after formation of a layer or thin layers over the ground surface,will cause a surface flow which could have th...

Whenever the amounts of percipitation is in excess...

Part of the precipitation penetrates the Earth infiltration . The permeated water will either flow in the course of inter layer water currents of the Earth inter flow , or as deposits , form subterranean water basins. These water basins may form in t...

Part of the precipitation penetrates the Earth inf...

Hail is the crystalized particles or drops of water pieces of ice which sometimes has a regular shape and is often seen in the shape of oval.Pyramid,sphere,and semisphere. The outer surface of the hail is sometimes smooth and sometimes rough and bump...

Hail is the crystalized particles or drops of wate...

More than %70 of the Earth is covered with water.The seas and oceans account for %97 of this water the oceans cover 361 million square kilometers. The extent of the seas and oceans used to be different.Before the first geological era, all the lands o...

More than %70 of the Earth is covered with water.T...

1 - Warm currents : These currents come about as a result of the movement of warm waters to higher latitudes, like Gulf stream current in the North Atlantic ocean and the Kuroshio current in the North Pacific ocean. 2 - Cold currents : A : These curr...

1 - Warm currents : These currents come about as a...

The contiguity and clash of two seas , two water currents , or two kinds of water have long occupied the minds of interpretors of Quran ; on the basis of the scientific knowledge of the time , they have given different interpretations in connection w...

The contiguity and clash of two seas , two water c...

When as a result of the exchange of heat and/or upward movement and exapansion,the temperature of the air decreases so much that the relative humidity reaches %001, a portion of the steam molecules in the air becomes dense ;this densitiy emerges foll...

When as a result of the exchange of heat and/or up...