Nina Sen

About forty percent of our rivers and 46 percent of lakes are too contaminated for swimming or aquatic life.

Copernicus proposed that the planets have the sun as the fixed point around which they orbit.

Astronomers say further exploration of the Kuiper Belt could lead to the discovery of even more dwarf planets.

According to astronomers, comets formed around 4.6 billion years ago when the solar system was born.

A second full moon is pretty rare to see because it only occurs once about every 32 months.

NASA had a lofty goal, to send a man to the moon and return him safely by the end of the 1960s.

Glenn was the first American astronaut to orbit Earth. He then became the oldest person in space years later.

Gemini is Latin for "twins."

Mars has a terrain very similar to Earth with valleys, mountains and craters.

There are three main pyramids in the Giza region and one sits near the Great Sphinx.

This hot star burns hydrogen at its core through nuclear fusion sending us life-giving sunlight.

Apollo 1 was to be the first manned mission of the moon landing program, designed to test out the setup by orbiting Earth.

With the sun rising behind the photographer, the Belt of Venus is the pinkish streak caused by the atmosphere reflecting light from the setting or rising sun.

The planets are drawn to scale with accurate orbital patterns.

Researchers have developed a robotic hand that can be used to disarm explosive devices.

A giant panda gave birth to twin cubs at the Wolong Giant Panda Wild Breeding Center in southwest China recently.

This highly - caffeinated drink is a dark tea made from the roasted leaves of the Yaupon holly.

In an experiment, six percent of drivers intentionally swerved to hit animals.

Six to eight astronauts are expected to go on the trip which will take nearly 2 and a half years.

The worms are only 3-4 centimeters in length and have no mechanisms to drill or break through bone.

The cave was found on a ranch in Chiapas, Mexico about 11 miles from the Guatemalan border.

NASA began on March 7 to use the twin-armed robot for operations on repair missions as part of their Robotic Refueling Mission(RRM).

This reaction continues in a cycle till it suddenly turn deep blue as a result of two forms of iodine binding to starch in the solution.

The 84-year-old bridge connected three communities in West Virginia but its condition had been rapidly deteriorating.

The virus is responsible for outbreaks of fatal hemorrhage fever throughout Africa.