Monday November 19, 2018
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Sit tight, June will last one second longer

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By NewsGram Staff Writer

People born on June 30 will be able to celebrate their birthday for one second longer this time. Due to the Earth’s rotation, the month will last one second more than a normal day. The midnight Coordinated Universal Time on June 30 will read 23:59:60 rather than resetting to 00:00:00, according to Discover Magazine.

The extra second, or “leap second,” is needed to re-synchronise our land-based clocks with Earth’s rotation, which is slowing down ever so slightly each year, it said. This is the 26th time a second has been added to the day since the practice began in 1972. Due to tidal forces between the Earth and the Moon, our planet’s rotation is slowing down, adding a whopping 1.4 milliseconds to our days every century.

During the time of the dinosaurs, the typical day on Earth was just 23 hours. In fact, the last true 24-hour rotation, exactly 86,400 seconds, occurred in 1820. Since then, the day has lengthened by 2.5 milliseconds, according to NASA. Earth has seen these precise measurements, thanks to punctual NASA scientists who have been monitoring the planet’s rotation using a technique called Very Long Baseline Interferometry (VLBI), the report said.

The last leap second, in 2012, caused a mayhem on popular websites with clocks synced to standard civil time. In a bid to avoid this, Google added a millisecond of time to their servers with each update so they were caught up with the new time when the leap second occurred.

(With inputs from IANS)

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A Close Planet Orbiting A Star Dubbed As ‘Super-Earth’

The researchers studied the planet by combining measurements from several high-precision instruments mounted on telescopes around the world.

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An artistic impression of a sunset from Barnard's Star on a newly detected planet dubbed a "Super-Earth," in this handout illustration provided Nov. 14, 2018. VOA

A frozen and dimly lit planet, dubbed a “Super-Earth,” may be orbiting the closest single star to our solar system, astronomers said Wednesday, based on two decades of scientific observations.

The planet, estimated to be at least 3.2 times more massive than Earth, was spotted circling Barnard’s Star, a type of relatively cool and low-mass star called a red dwarf. Barnard’s Star is about 6 light-years away from our solar system, comparatively close in cosmic terms, and it’s believed that the planet obits this star every 233 days.

Planets orbiting stars beyond our solar system are called exoplanets. Nearly 4,000 have been discovered. The newly discovered one is the second closest to our solar system ever found. It is thought to be a “Super-Earth,” a category of planets more massive than Earth but smaller than the large gas planets.

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This opens up the prospect that life could be possible throughout a wider range of other universes, if they exist, the researchers said. Pixabay

“After a very careful analysis, we are 99 percent confident that the planet is there,” researcher Ignasi Ribas of the Institute of Space Studies of Catalonia and the Institute of Space Sciences said in a statement. “However, we’ll continue to observe this fast-moving star to exclude possible, but improbable, natural variations of the stellar brightness which could masquerade as a planet.”

Alpha Centauri

The only closer stars than Barnard’s Star are part of the triple-star system Alpha Centauri, located a bit more than 4 light-years from our solar system.

Two years ago, astronomers announced the discovery of a roughly Earth-sized planet circling Proxima Centauri, part of the Alpha Centauri system, in an orbit that might enable liquid water to exist on its surface, raising the possibility that it could harbor alien life.

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Astronomers discover ancient star formed by Big Bang, pixabay

The newly detected planet orbiting Barnard’s Star may not be so hospitable, with surface temperatures of perhaps minus 274 degrees Fahrenheit (minus 170 degrees Celsius). Barnard’s Star provides the frigid planet only 2 percent of the energy that the sun provides Earth.

Also Read: NASA’s Ralph Will Explore Jupiter’s Trojan Asteroids In 2021

The researchers studied the planet by combining measurements from several high-precision instruments mounted on telescopes around the world.

The research was published in the journal Nature. (VOA)