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To understand how rainfall on Mars changed over time, the researchers had to consider how its atmosphere has changed.

Life on Mars: Streaks may be sand, not water

Mars theory gets dusted; a new study suggests that dark streaks on Mars represent flowing sand - not water.

21 Nov 2017 9:25 AM IST

AIDS-related illnesses remain the leading cause of death among women of reproductive age (15-49 years) globally, and they are the second leading cause of death for young women aged 15-24 years in Africa, said the report.

New ARV drugs, early diagnosis key to beating AIDS epidemic'

South Africa led the world with the number of people on treatment, at 4.2 million.

21 Nov 2017 1:14 AM IST

The medicine is a version of Otsuka Pharmaceutical Co Ltds established drug Abilify for schizophrenia, bipolar disorder and depression, containing a tracking device developed by Proteus Digital Health.

US approves digital pill that tracks when patients take it

The system offers doctors an objective way to measure if patients are swallowing their pills on schedule.

20 Nov 2017 8:10 PM IST

The discovery will involve findings from the Hubble Space Telescope and NASAs Cassini spacecraft, which is orbiting Saturn.

New US weather satellite launched from California

The satellite will contribute to near-term weather forecasts, climate and ocean dynamics research, among many other...

20 Nov 2017 8:58 AM IST

The flooding was a result of global warming, which has led to extraordinary temperatures in the Arctic.

Paris Acccord: What is next?

A look at steps, which will be taken in the coming years to further international efforts to curb global warming.

20 Nov 2017 8:16 AM IST

Planet Nine does exist, and may be 10 times the mass of the Earth and 20 times away from the Sun than Neptune, NASA scientists say

20 years of changing seasons on earth packed into 2Â½ minutes

It took three months to complete the visualisation, using satellite imagery.

18 Nov 2017 6:03 PM IST

Interstellar visitor shaped like giant fire extinguisher

Interstellar visitor shaped like giant fire extinguisher

The scientists report that our solar system could be packed with 10,000 such interstellar travellers at any given time.

17 Nov 2017 4:08 PM IST

A rare glimpse beneath the Antarctic sea ice, reveals a colourful world filled with coconut-shaped sponges, dandelion-like worms, pink algae and spidery starfish at Australias Casey research station near OBrien Bay in Antarctica. The Australian Antarctic Division took footage on a camera attached to a remotely operated vehicle sent down through a small hole drilled in the ice. (Photo: AFP)

Toxic Algae: Once a nuisance, now a severe nationwide threat

Last year, Florida's governor declared a state of emergency and beaches were closed when algae blooms spread from...

17 Nov 2017 1:23 PM IST

Dream Catcher Landing. Photo: SNC

Dream Chaser successfully completes landing test

Around 30 feet (nine meters) in length, the space plane looks like a miniature version of NASA's retired Space Shuttles

16 Nov 2017 4:26 PM IST

Representative Photo: Sony Pictures

Killer robots: Leading AI scientist warns of an apocalypse

Will Artificial intelligene be the end of humanity? Killer robots are soon going to be a reality

16 Nov 2017 12:40 PM IST

The planet is believed to border the so-called habitable zone. (Photo: AP)

Close new Earth-size world, where year lasts under 10 days

At a distance of 11 light-years, Ross 128 b is the second-closest planet to be detected yet outside our solar system.

16 Nov 2017 11:54 AM IST

The supply ship will remain at the space station until the beginning of December when its cut loose with a load of trash. (Photo: NASA)

Space delivery: Astronauts get Ice cream, make-own pizzas

A commercial supply ship arrived at the International Space Station two days after launching from Virginia.

15 Nov 2017 3:07 PM IST