Astronomers find first carbon-rich asteroid in Kuiper Belt
Washington, May 10: Astronomers have discovered an unusual carbon-rich asteroid in the Kuiper Belt -- the first of its kind to be confirmed in the cold outer reaches of the solar system.
This object, designated 2004 EW95, likely formed in the asteroid belt between Mars and Jupiter and has been flung billions of kilometres from its origin to its current home in the Kuiper Belt, the study said.
The researchers found that the asteroid's reflectance spectrum -- the specific pattern of wavelengths of light reflected from an object -- was different to that of similar small Kuiper Belt Objects (KBOs), which typically have uninteresting, featureless spectra that reveal little information about their composition.
"The reflectance spectrum of 2004 EW95 was clearly distinct from the other observed outer Solar System objects," explained lead author Tom Seccull of Queen's University Belfast in Britain
"It looked enough of a weirdo for us to take a closer look," Seccull added.
Theoretical models of the early days of our solar system predict that after the gas giants formed they rampaged through the solar system, ejecting small rocky bodies from the inner solar system to far-flung orbits at great distances from the Sun.
In particular, these models suggest that the Kuiper Belt -- a cold region beyond the orbit of Neptune -- should contain a small fraction of rocky bodies from the inner solar system, such as carbon-rich asteroids, referred to as carbonaceous asteroids.
The new study, published in The Astrophysical Journal, presented evidence for the first reliably-observed carbonaceous asteroid in the Kuiper Belt, providing strong support for these theoretical models of our solar system's troubled youth.
After measurements from multiple instruments at European Southern Observatory's Very Large Telescope (VLT), the team of astronomers was able to measure the composition of the object.
The results suggest that it originally formed in the inner solar system and must have since migrated outwards.
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French President Macron concludes Mumbai visit
Mumbai (PTI): French President Emmanuel Macron, along with First Lady Brigitte Macron, left Mumbai for New Delhi on Wednesday after concluding his engagements here, including bilateral talks with Prime Minister Narendra Modi.
They were seen off at Chhatrapati Shivaji Maharaj International Airport by Maharashtra Governor Acharya Devvrat, Chief Minister Devendra Fadnavis and Deputy CM Eknath Shinde.
On Tuesday, Macron held discussions with Modi as part of efforts to further strengthen India-France strategic ties.
During the Mumbai visit, the French president and his wife also met some of India's top filmmakers and actors, and had an animated exchange with them about cinema, culture and collaboration.
President Macron is on an official visit to India from February 17 to 19 at the invitation of PM Modi to participate in the AI Impact Summit hosted by India in the national capital Delhi, besides the bilateral summit in Mumbai.
PM Modi will inaugurate the summit on February 19. As many as 20 heads of states, including French President Macron, will be present at the inaugural session, Electronics and IT Secretary S Krishnan said.
