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Just as the meter once the length of a bar of platinum-iridium, also kept in Paris is now defined by the constant speed of light in a vacuum, so a kilogram will be defined by a tiny but immutable fundamental value called the Planck constant .

Scientists to swap dusty old kilogram for something more stable

The kilogram has been defined since 1889 by a shiny piece of platinum-iridium held in Paris.

13 Nov 2018 8:23 AM IST

In this image from video made available by NASA, US astronaut Anne McClain speaks during an interview in Star City, Russia on Friday, Nov. 9, 2018. She is set to blast off Dec. 3 on her first spaceflight, with a Russian and Canadian. (NASA via AP)

Next US astronaut on Russian rocket confident after mishaps

Last month, astronauts had to make an emergency landing in Kazakhstan following a failed launch.

11 Nov 2018 11:50 AM IST

On Wednesday, the world and the scientific community woke up to some sad news of famed theoretical physicist Stephen Hawkings demise.

Stephen Hawking's thesis and wheelchair sell for $1 million

Hawking's 117-page dissertation Properties of expanding universes from 1965 sold for 584,750 pounds.

10 Nov 2018 9:54 AM IST

The ecosystems response is lagging behind the rate of climate change. (Photo: ANI)

Study suggests Amazon forests failing to keep up with climate change

The team also found that bigger trees are out competing smaller plants.

9 Nov 2018 12:17 PM IST

NASA wont re-establish contact until Parker is far enough from the sun to avoid radio interference. (Ed Whitman/NASA via AP, File)

NASA's Parker spacecraft makes 1st close approach to sun

The Parker Solar Probe flew within 15 million miles (24 million kilometers) of the sun's surface Monday night.

9 Nov 2018 11:41 AM IST

A copy of the scientists doctoral thesis fetched almost 585,000 pounds (USD767,000). (AP Photo/Frank Augstein, file)

Stephen Hawking's wheelchair sells for USD 393,000 at auction

Proceeds from the sale will go to two charities, the Stephen Hawking Foundation and the Motor Neurone Disease...

9 Nov 2018 11:31 AM IST

The new findings fuel discussions about whether historical or evolutionary events prompted this near-simultaneous burst of human creativity. (Photo: AP)

Red bull drawn in Indonesian cave dated to 40,000 years ago

The remote limestones caves on Borneo have been known to contain prehistoric drawings since the 1990s.

9 Nov 2018 11:21 AM IST

The CH-7â€²s chief designer Shi Wen says the aircraft can fly long hours, scout and strike the target when necessary. (AP Photo/Kin Cheung)

China unveils stealth combat drone in development

The CH-7 unmanned aerial vehicle also underscores China's growing competitiveness in the expanding global market for...

9 Nov 2018 10:50 AM IST

Parasitic worm infections can last many years and can cause severe pain.

Gene study reveals secrets of parasitic worms, possible treatments

The results point to potential de-worming treatments to help fight some of the most neglected tropical diseases.

8 Nov 2018 11:15 AM IST

A spokesman said NASA officials hope the tests will produce data that can be used by the agency when testing the X-59 low boom flight demonstrator.

NASA conducts quiet sonic boom tests near Texas Gulf Coast

NASA launched a two-week research project Monday on quiet supersonic research flights near Galveston.

7 Nov 2018 12:44 PM IST

Some of the satellites that have survived are closer to Mars and they did not have the full view. Our orbit is bigger and we are able to take the full view of the planet, he said. The imaging system is also able to map the topography through the dust clouds in Mars.

Portugal to build satellite launch pad, lab with China

The micro satellites to be designed there will connect with land- and ocean-based sensors to collect data.

7 Nov 2018 12:20 PM IST

A Falcon 9 SpaceX heavy rocket lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral. The Falcon Heavy, has three first-stage boosters, strapped together with 27 engines in all. (Photo: AP)

SpaceX seeks USD 750 million leveraged loan

SpaceX makes rockets and spacecraft. The company was founded by Elon Musk in 2002 as a way to help humans live on other...

7 Nov 2018 10:16 AM IST