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What is the Saraswati supercluster?

What is the Saraswati supercluster? What are galaxy clusters? How big are they? Galaxies are like the building blocks of the universe, they contain a huge number of stars, something like 100 billion at a count. Galaxy groups can have three to 20 galaxies, the richest systems are called clusters (like the Virgo cluster) which can have several hundred galaxies. Superclusters are clusters of clusters. They can have as few as two clusters, and superclusters with two to four clusters are common. Saraswati has 42. Within superclusters, clusters are connected by filaments and sheets of dark matter with galaxies embedded in them. It is supposed that the galaxies are born in the filaments and then migrate towards the intersection of the filaments where they are assimilated into clusters. What are superclusters? These are the largest coherent structures seen in the universe. Firstly there are clusters of galaxies together with associated gas and dark matter. Large groups of such clusters, ...
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As Indonesia cuts forests, fake nature thrives

As Indonesia cuts forests, fake nature thrives JAKARTA: Indonesia’s capital is lush with fake greenery even as the country is cutting down its precious tropical forests at a record rate. Jakarta’s gleaming air-conditioned malls have a particular fondness for lifeless extravaganzas of plastic ferns or autumnal trees that don’t drop any leaves. Construction sites are wrapped in screens printed with giant leaves glistening with dew drops or the picturesque deciduous forests found in temperate climates. A new terminal at the international airport has a mini-jungle within its cavernous air-conditioned interior. Despite the odd inclusion of fake grass it has the slight saving grace that the potted greenery is real. It’s not that Jakarta lacks real trees. The presidential palace has well-manicured surrounds of park, verges and trees. But elsewhere, against the backdrop of unrelenting traffic and brutalist concrete, the greens often seem weirdly out of place, like an introduced alien specie...
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8GB ASUS ZenFone AR arrives in India at ₹49,999

8GB ASUS ZenFone AR arrives in India at ₹49,999 Aiming for a larger pie of the premium segment in India, Taiwanese electronics giant ASUS has unveiled its flagship ‘ZenFone AR’ smartphone — the world’s first Google Tango-enabled and Google Daydream View-ready smartphone with a huge 8GB RAM — for the consumers. First showcased at ‘CES 2017’ in January this year, the 5.7-inch ZenFone AR with a unique rear tri-camera system and 128GB internal storage (expendable up to 2 TB) will be available exclusively on Flipkart for ₹49,999 from 4 p.m. on July 13. The tri-camera system has 23MP main camera, a depth-sensing camera and motion-tracking camera with a “Super Resolution” mode that can create massive 92MP image and capture 4K-UHD video. The device sports 8MP selfie camera. “With ZenFone AR, we desire to turn your physical world into a magical world by enabling it to perceive space and motion that goes beyond the boundaries of a touch screen,” Peter Chang, Regional Head, South Asia & C...
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