Physical Science

Order of the National Green Tribunal regarding deterioration of Nayar river, Uttarakhand, 05/06/2025

Order of the National Green Tribunal in the matter of In Re: News Item titled "Nayar river is vanishing - a yatra reveals conservation goes beyond science and policy" appearing in ‘The Down To Earth’ dated 03.06.2025. The original application was registered suo-motu based on the news item titled "Nayar …

Park officials cant locate tigers to collar

As scientists have predicted but have had a hard time proving, the surface of Titan, Saturn’s largest moon, appears to be dotted with lakes of liquid methane. The lakes are more intriguing evidence of the active phenomena at play on the only moon in the solar system with a dense …

Formation of stars linked to evolution of life on earth

gear up to go back in time, approximately 2,400 million years ago, when there was frenzied star-making in the Milky Way. The frenzy has a link with formation of life on Earth. Science has discovered that the bacterial count of the seas at that time soared. Such productivity has not …

Mission: To destroy asteroid before it hits

Nasa is drawing up a shortlist of ideas to be unveiled early next year for diverting a 40m-tonne asteroid that is on course to pass dangerously close to Earth. The schemes will be presented and discussed at the annual meeting of the American Association for the Advancement of Science. Fears …

Mercury's magnetic mystery resolved

A German scientist believes he has resolved a three -decade mystery about why Mercury, the closest planet to the Sun, has such a weak magnetic field.

Now, Isro sets its eyes on bigger missions

Our space scientists are bored and spoiling for some big-ticket action

NASA in pact with Google

NASA Ames Research centre and Google have signed a space act agreement that formally establishes a relationship to work together on a variety of challenging technical problems ranging from large scale data management and massively distributed computing to human computer interfaces.

Groundwater altered Mars surface

A crop of "blueberries' found by Mars' Victoria Crater by a Nasa rover may indicate ground, not surface, water altered the area, US space officials said. Nasa officials said they thought the "blueberries' were formed by iron-rich minerals when groundwater percolated through sediment. The spheres were scattered across the surface …

Machine to capture live pictures of atomic motions

it may now be possible to capture live pictures of atomic motions in a chemical reaction or marvel at a snapshot of early universe. An international research team is building two huge machines towards these. "We have developed a novel microwave amplifier and ultra-stable microwave generator for one of the …

Isro set to test reusable space vehicle

Come January, and India's space programme will soar into a new hi-tech era creating history. Between January 10 and 15, 2007, the highly-proven four-stage Polar Satellite Launch Vehicle (PSLV) will thunder off the launch pad at the Satish Dhawan Space Centre, Sriharikota, carrying with it three satellites. The mission is …

Gigantic solar wave sweeps across the Sun

If the Sun was a person, he was in one hell of a foul mood on Wednesday. A blast wave swept across the face of the Sun on Wednesday, rippling outward from the site of a large solar flare, New Scientist reported. Blast waves that spread all the way across …

Moon and Beyond: NASA plans Mars mission from permanent lunar base

In 2004, when George W Bush announced a plan to return astronauts to the Moon and then go on to Mars, he may have finally succeeded in doing something scientifically smart. Last week, NASA announced a $100 billion plan for an international team of astronauts to be living and working …

Water on Mars. life?

The big question is back: could life exist on Mars? Photographs taken from orbit suggest that water may have flowed on the surface of Mars in the very recent past

2020, a moon odyssey: Nasa plans permanent lunar base

Nasa announced plans for a permanent base on the Moon, to be started soon after astronauts return there around 2020. The agency's deputy administrator, Shana Dale, said the US would develop rockets and spacecraft to get people to the Moon and establish a rudimentary base. There, other countries and commercial …

Nasa shuttle: A 25-year-old bus, freight truck for space

The US space shuttle combines the duties of a city bus and a freight truck for space, capable of carrying a crew of eight and a heavy cargo. But keeping the Nasa workhorse going a quarter century after it was first deployed has required a huge amount of technological sophistication …

Discovery crew to rewire space station

Several days after space shuttle Discovery arrives at the international space station, some of the lights will go out. Some communications with Mission Control will stop. Backup power will be lost. That may sound scary for the astronauts orbiting 220 miles above Earth, but they'll be ready for it. The …

Pak test-fires N-capable Shaheen-1 missile

Pakistan testlaunched a nuclear-capable medium-range missile, two days after India conducted its first trial of a new ballistic intercept system. The Pakistani Hatf-4 or Shaheen-1 missile

'Band of misfits' theory: Meteors are not that rare

At the southern end of Madagascar lie four enormous wedge-shaped sediment deposits, called chevrons, that are composed of material from the ocean floor. Each covers more than 100 square kilometers with sediment hundreds of meters deep. On close inspection, the chevron deposits contain deep-ocean microfossils that are fused with a …

Bush signs new space policy

us President George W Bush recently signed a new national space policy, which claims that the nation has the right to deny access to space to anyone hostile to its national interests. "The us will preserve its rights, capabilities and freedom of action in space... and deny, if necessary, adversaries …

India to launch Israeli satellite next year

Israel will be using an Indian space launch vehicle to place its satellite in orbit in the next fiscal. Though Israel has several satellites of its own, it does not have any launch vehicle. "This is for the first time that an Indian vehicle will be used to launch an …

INDIAN ON MOON BY 2020: ISRO

The Indian Space Research Organisation on Tuesday got a shot in the arm with nearly 80 scientists drawn from various fields, backing its ambitious plan to send an Indian to the moon. The Isro has mooted two plans: Send an Indian into space around 2014 and then have a walk …

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