DARK ENERGY DOESN'T EXIST?
The New Indian Express Mangaluru|December 25, 2024
New study shows the 'timescape' model of cosmic expansion, which doesn't have a need for dark energy because the differences in stretching light aren't the result of an accelerating universe, but instead a consequence of how we calibrate time and distance

NE of the biggest mysteries in science - dark energy doesn't actually exist, according to researchers looking to solve the riddle of how the Universe is expanding.

For the past 100 years, physicists have generally assumed that the cosmos is growing equally in all directions. They employed the concept of dark energy as a placeholder to explain unknown physics they couldn't understand, but the contentious theory has always had its problems.

Now a team of physicists and astronomers at the University of Canterbury in Christchurch, New Zealand, are challenging the status quo, using improved analysis of supernovae light curves to show that the Universe is expanding in a more varied, "lumpier" way.

The new evidence supports the "timescape" model of cosmic expansion, which doesn't have a need for dark energy because the differences in stretching light aren't the result of an accelerating Universe, but instead a consequence of how we calibrate time and distance.

It takes into account that gravity slows time, so an ideal clock in empty space ticks faster than inside a galaxy. The model suggests that a clock in the Milky Way would be about 35 per cent slower than the same one at an average position in large cosmic voids, meaning billions more years would have passed in voids. This would in turn allow more expansion of space, making it seem like the expansion is getting faster when such vast empty voids grow to dominate the Universe.

Denne historien er fra December 25, 2024-utgaven av The New Indian Express Mangaluru.

Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.

Denne historien er fra December 25, 2024-utgaven av The New Indian Express Mangaluru.

Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.

FLERE HISTORIER FRA THE NEW INDIAN EXPRESS MANGALURUSe alt
The New Indian Express Mangaluru

Hamas, Israel Point Fingers at Each Other for Delay in Talks

HAMAS and Israel traded accusations on Wednesday over delays in finalizing a ceasefire and hostage release agreement for Gaza, despite continued efforts by mediators to broker a deal in the latest round of negotiations.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

SGPC Chief Punished Over 'Foul' Language

ON the direction of Panj Pyare (Five Beloveds), Shiromani Gurdwara Parbandhak Committee (SGPC) chief Harjinder Singh Dhami on Wednesday underwent religious punishment for using inappropriate language against his predecessor, Bibi Jagir Kaur.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Pilgrims in peril as Katra goes for 72-hr shutdown

THE Katra town, the base camp for pilgrims visiting the Vaishno Devi shrine, is observing 72-hour shutdown from Wednesday against the proposed ropeway project.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Lookout notice against ex-cop after gold haul

A Look Out Circular (LOC) has been issued against ‘crorepati’ ex-Madhya Pradesh transport department constable, Saurabh Sharma in the unaccounted gold and cash from MUV case.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Underwater drones part of Mahakumbh security

THE Mahakumbh mela administration has put in place a three-level intelligence system in a move to bolster security for the pilgrims.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Winter charm at peak as snow sweeps U'khand

A severe cold wave has gripped Uttarakhand's high Himalayan regions, bringing an unexpected chill to the state this December with the average minimum temperature hovering around 3.5 degrees C, weather department officials said.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

One more tigress found, big cat count reaches 5 in Palamu Tiger Reserve

IN a significant achievement, the Hyderabad-based Centre for Cellular & Molecular Biology (CCMB) has confirmed the presence of a tigress in the Palamu Tiger Reserve (PTR).

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Cop in 'dry' Gujarat plays bartender to bootlegger buddy

IN dry Gujarat, where the police are supposed to uphold the liquor ban, a head constable from Petlad in Anand district decided to play bartender for his bootlegger buddy. He broke the law and tarnished the image of the khaki uniform by stashing foreign liquor in his own house.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

Shah Sets Target, Says 2L Cooperatives in 5 Years

UNION Cooperation Minister Amit Shah on Wednesday inaugurated 10,000 new multi-purpose Primary Agricultural Cooperative Societies (PACS), saying the government is working on a mission mode to achieve its target of establishing 2 lakh such societies in the next five years.

time-read
1 min  |
December 26, 2024
The New Indian Express Mangaluru

4 killed, 21 hurt as state transport bus plunges into gorge in U'khand

FOUR people, including a woman and a child, were killed and 21 others injured when a bus plunged into a gorge in Bhimtal, located in Uttarakhand's Kumaon region, on Wednesday.

time-read
1 min  |
December 26, 2024