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A new scientific research reveals the temperature of ‘Super Earth’

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Image source: www.businessinsider.my

London: Using data from NASA’s Spitzer Space Telescope, an international team of astronomers that also includes an Indian-origin scientist has for the first time obtained the most detailed “fingerprint” of a super-Earth planet — a rocky planet nearly two times as big as ours.

The efforts led to the first temperature map that reveals extreme temperature swings from one side of the “55 Cancri e” planet to the other and hints that a possible reason for this is the presence of lava flows.

“We have entered a new era of atmospheric remote sensing of rocky exoplanets,” said study co-author Nikku Madhusudhan from the institute of astronomy at the University of Cambridge.

“It is incredible that we are now able to measure the large scale temperature distribution on the surface of a rocky exoplanet,” he added.

According to the team led by Cambridge, conditions on the hot side of the planet are so extreme that it may have caused the atmosphere to evaporate, with the result that conditions on the two sides of the planet vary widely.

Temperatures on the hot side can reach 2500 degrees Celsius while temperatures on the cool side are around 1100 degree Celsius.

“55 Cancri e” orbits a sun-like star located 40 light years away in the Cancer constellation.

It is a ‘super Earth’ – a rocky exoplanet about twice the size and eight times the mass of Earth and orbits its parent star so closely that a year lasts just 18 hours.

The planet is also tidally locked, meaning that it always shows the same face to its parent star, similar to the Moon, so there is a permanent “day” side and a “night” side.

Since it is among the nearest super Earths whose composition can be studied, 55 Cancri e is among the best candidates for detailed observations of surface and atmospheric conditions on rocky exoplanets.

“We haven’t yet found any other planet that is this small and orbits so close to its parent star, and is relatively close to us, so 55 Cancri e offers lots of possibilities,” added Dr Brice-Olivier Demory from Cambridge and the paper’s lead author.

“We still don’t know exactly what this planet is made of – it’s still a riddle. These results are like adding another brick to the wall, but the exact nature of this planet is still not completely understood,” he added in the paper appeared in the journal Nature.

According to Demory, one possibility for this variation could be either a complete lack of atmosphere, or one which has been partially destroyed due to the strong irradiation from the nearby host star.

Another possibility for the huge discrepancy between the day side and the night side may be that the molten lava on the day side moves heat along the surface, but since lava is mostly solid on the night side, heat is not moved around as efficiently.

What is unclear however, is where exactly the ‘extra’ heat on 55 Cancri e comes from in the first place.

The researchers may have to wait until the next generation of space telescopes are launched to find out.

In 2018, the successor to Hubble and Spitzer – the James Webb Space Telescope – will launch, allowing astronomers to look at planets outside our solar system with entirely new levels of precision.

Credits: Agencies

  • Akanksha Sharma

    These planets are termed as Super planets because their mass is twice as large as earth’s mass but the term does not imply that the temperature or any other living condition is similar to that of earths’.

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LinkedIn ‘Open For Business’ Feature In India

LinkedIn introduces its 'Open For Business' feature in India

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LinkedIn
LinkedIn introduces a feature that supports small and medium businesses (SMBs) and freelancers across the world. Pixabay

Microsoft-owned professional networking platform LinkedIn on Monday launched “Open for Business” in India — a feature that allows freelancers and small business owners to add their services to their LinkedIn profiles.

Initially rolled out in the US in July, the feature is now live in India and rest of the world and is a way for freelancers and small businesses to indicate they are “open for business”.

Acording to the company, this feature underlines its commitment to supporting small and medium businesses (SMBs) and freelancers across the world.

“With 660 million members and 30 million companies on the platform across the world, LinkedIn is uniquely positioned to help freelancers and small businesses be more productive and successful, whether they are based in Dubai or Dundee (Scotland),” Allen Blue, Co-founder and VP of Product Management, LinkedIn, said in a statement.

LinkedIn
LinkedIn is uniquely positioned to help freelancers and small businesses be more productive and successful. Pixabay

Based on the company’s research, small businesses are found to rely heavily on word of mouth, in order to bring in new customers.

“Open for Business” aims to digitise this word of mouth concept by making it easy for members to find, message, and provide references to each other.

With over 60 million users, India is LinkedIn’s fastest-growing and largest market outside the US.

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The company last month rolled out a ‘Made in India’ feature called ‘Events’ that allows members to create and attend events directly on both the app as well the web globally.

The USP of the product is the ability to enable safe online conversations and offline events. (IANS)