Found 8 Articles for Solar System

In the past several decades, scientists have come up with various theories regarding possibility of life on Mars, and like most other mysteries this one is also yet to be solved. But for unfolding a possible discovery, NASA scientists having putting in lot of money, technology and effort into missions to Mars.Mars is the 4th planet from the Sun and currently second closest to Earth. With this proximity to Earth it has a few similar physical properties that drives scientific curiosity to find life on the red planet. And scientists consistently attempt to find whether the Martian Physical Environment was ... Read More

An Eclipse is formed when a celestial body is obscured by another. We know that eclipses occur when sun, moon, and earth align in a straight line. The Solar eclipse occurs when the moon comes in between the sun and the earth. The Lunar eclipse is formed when the earth blocks the way for the sunlight to reach the moon.Penumbra and AntumbraThe umbra is the innermost and darkest part of the shadow, which is the area when an observer can experience the eclipse completely. The Penumbra is the area in which only a portion of the light is obscured by ... Read More

In the vast space around us, there are numerous galaxies present, which are known as large groups filled with stars, dust, and gases all held together due to gravity. All the galaxies are likely to contain stars, planets, moons, comets, asteroids, black holes, nebulae, dust, neutron stars etc.Just like our solar system that lies in the Milky Way galaxy, there are many galaxies in the space. Every galaxy moves at certain speed and exists in a certain shape. Our milky way galaxy is in the spiral shape with a bright bulge at its center.The famous astronomer Edwin Hubble studied the ... Read More

The atmosphere on the moon is much rarer and the temperatures on the moon are extreme ranging from boiling hot to freezing cold depending on the area of moon’s surface exposed to sunlight. The atmospheric gases on the moon are very much rarer on the moon.As moon rotates on its axis in about 27 days, lunar day-time is about 13.5 earth days and lunar night-time is about 13.5 earth nights. The lunar atmosphere varies depending upon these lunar day and night times also.The gases on the earth remain in the earth’s atmosphere because of the gravitational pull acting on. These ... Read More

Neptune is the coldest planet in the solar system as Pluto has been excluded as it was regarded as a dwarf planet. It is the eighth and farthest known planet from the Sun. It has 17 times the mass of Earth and is the fourth largest planet in the solar system. It takes 164.8 years for Neptune to finish one revolution around the sun and the elliptical orbit of Neptune is inclined 1.77° compared to that of Earth.Voyager 2 is the only spacecraft that visited Neptune. It analyzed Neptune's rotation, tilt, weather conditions and also its moons and ring systems.Physical ... Read More

Space is an empty void. It is not totally vacant, but rather comprises of a vacuum containing a very low thickness of particles, overwhelmingly a plasma of hydrogen and helium. It also consists of neutrinos, cosmic and electromagnetic rays. One hydrogen per cubic meter is the density of space.There is nothing in between galaxies and the temperature literally reaches 2.7 K, which is −270.45 °C. In the galaxies, 90% of the mass is in an unknown form, called dark matter. It interacts with other matter through the gravitational but not electromagnetic force.Manned spaceflight is limited to the lower Earth orbit ... Read More

A nebula is an interstellar cloud of dust made of hydrogen, helium and other ionized gasses. Initially, it was a name given for any diffuse cosmic object, including galaxies past the Milky Way.Most nebulae are of the tremendous size, even a great many light years in diameter. The nebula that is scarcely noticeable to the human eye from Earth would seem bigger, yet not brighter, when near it. The Orion Nebula, the brightest cloud in the sky that involves an area double the diameter of the full Moon, can be seen with the exposed eye yet was missed by early ... Read More

Well, rather than being a rumor, the idea of the end of the world in 2012 was largely based on some prophecies done by many well-known predictors. Therefore, no individual is solely responsible for the spread of this theory. However, being widely spread, these predictions were considered true by the people around the globe without verifying the fact behind it.Nostradamus Predicted the DoomsdayMany religions, prophecies, and calendars pointed to Dec. 21, 2012 as the doomsday including even the well-known futurist and the French physician, Nostradamus, whose prophecies were published long ago in 1555 by the name Les Propheties. This book ... Read More