Space Technology

Reply by the Central Pollution Control Board (CPCB) regarding use of environmental compensation funds, 29/04/2025

Reply by the Central Pollution Control Board (CPCB) in compliance to the National Green Tribunal (NGT) order dated January 21, 2024 in the matter of ‘News item titled “Feeling anxious? Toxic air could be to blame” appearing in Times of India dated 10.10.2023’. NGT had directed CPCB to file a …

Green eye in the sky

FOR three minutes, the night sky lit up on March 1, 2002, at the European Space Agency (ESA) launch centre at Kourou in French Guiana on the northern coast of South America. It was from here that an Ariane-5 rocket blasted off and put into orbit ENVISAT - the largest …

Taming wild fires

just a few clicks of the computer mouse can help scientists prevent wildfires to a great extent. To some, it may sound impractical, but is true. Computer simulations are being used by scientists to evolve ways to prevent forest fires. By combining satellite-derived vegetation data, topographic maps, weather data and …

Looking down at dust

The view from space of a bright blue Earth is becoming marred by smoke and dust as environmental destruction grows increasingly visible, reported the commander of the International Space Station, astronaut Frank Culbertson. He said that the view had changed considerably since his the space mission in 1990. There is …

Universally changing

it is one of the unwritten assumptions of physics that the laws of nature are the same not only in all parts of the Universe but also at all times. This assumption is what allows us to say meaningful things about very distant realms of our Universe and also about …

Particles of significance

the Sun, apart from being the source of all energy for the Earth, also spews out other particles copiously into space. One such particle, the neutrino could help scientists formulate the correct theory of the Sun. Unfortunately, all attempts till date to measure the number of neutrinos coming to us …

FOLLOW UP

The world's first solar-powered aircraft, Helios, has made a world altitude record. It reached 24.7 km, five hours and 16 minutes after its launch from the us navy's Pacific Missile Range Facility at Barking Sands, Kauai. Helios, the aircraft of the National Aeronautics and Space Administration (nasa), surpassed the all-time …

Unearthing a duplicate

we may not be the only ones. With the discovery of a new planet, a team of astronomers has come a step closer to finding solar systems that might have characteristics similar to our own. The team recently found a Jupiter-sized planet in a circular orbit around a faint star …

Keeping watch

A "spy in the sky' satellite is being tested by coastguards in Canada in an attempt to catch ships illegally discharging oil into the North Sea. The satellite, called Radarsat, is part of an eight-month trial ordered by the Maritime and Coastguard Agency. It is hoped that the satellite, which …

Corals, maths and satellites

a canadian researcher has discovered answer to one of the most crucial environmental challenges facing the world: how to save coral reefs. Ellsworth LeDrew, a geography professor at the University of Waterloo in Ontario, has devised a mathematical formula that will automatically scan satellite images to uncover changes in coral …

Safe crash

The Galileo spacecraft launched in 1989 to survey Jupiter and four of its moons may be close to a fiery end. A NASA (National Aeronautic and Space Administration) panel has recommended that the spacecraft be allowed to crash into Jupiter's atmosphere in December 2002. This is to prevent it from …

Greenland ice melts

global warming is responsible for melting more than 50 billion tonnes of water per year from the Greenland ice sheet, leading to a 59 centimetres rise in global sea level over the last century. This was stated in a National Aeronautical and Space Administration ( nasa ) study, which is …

The dark side of the sun

Our knowledge of the Sun is limited by the fact that direct observations from the Earth are limited to the near side of our nearest star. The sun rotates and eventually all sides come into view, yet, remote imaging of the far side would be of immense use for understanding …

The planet up close

The space shuttle Endeavour has captured every corner of the Earth in amazing three-dimensional images. For 11 days, beginning January 31, the globe was swathed by radar waves so that scientists from National Aeronautics and Space Administration (NASA) in the US could obtain data for the most complete high-resolution maps …

China may buy Mir

according to local media reports, Russia may sell its space station Mir to China. Reporting on the last round of bilateral defence cooperation talks held in Moscow in the first week of March, local daily Izvestia stated that "Russia will help the People's Republic of China (prc ) to build …

Stars and lumps

The Cosmic Background Explorer satellite has discovered the infrared glow of the universe's first generation of stars and galaxies. But its small telescopes could not pick up the "lumps' that indicate the structure of the primordial star systems. Now, two astronomers have found the lumps after analysing data from the …

The core of a star

The Chandra space observatory, launched last month by the US National Aeronautical and Space Administration, has already started transmitting images. It has sent images of the heart of the Crab Nebula, a star that exploded in the 11 century, which was recorded by Chinese astronomers. The images show energetic material …

Stabilising mirrors

Turbulence in the atmosphere is a major problem with Earth-based telescopes. Most modern telescopes take care of this by using adaptive optics, a corrective process in which parts of the telescope mirror are mechanically flexed. This is done by a complex motor system in an amount typically equal to a …

Space age

IT IS only when a disaster of the magnitude that struck Orissa takes place, does a country realise the need to perfect its scientific infrastructure. Space technology, for one, helps in planning development in such a way as to minimise the impact of such a disaster, or when it strikes, …

Umbrella for the Earth

A solar sail may soon shield the Earth against solar storms. The sail will be stationed between the Earth and the Sun and will give warnings of solar storms that cause serious damage to phone networks, satellites and power grids. The sail will be hoisted on a lightweight spacecraft to …

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