NASA telescope spies unusual galaxies from dawn of the universe

first_img Share your voice Spitzer’s deep-field view of the sky awash with galaxies. Circled in red are incredibly faint, distant galaxies that the telescope observed for over 200 hours.  NASA/JPL-Caltech/ESA/Spitzer/P. Oesch/S. De Barros/I.Labbe Astronomers surveying the sky with NASA’s Spitzer space telescope have been able to peer back to the early universe, 13 billion years in the past, and find some of the very first galaxies. They look like tiny, orange dots aglow in a sea of darkness — not too dissimilar to the famed first image of a black hole — but the miniscule lights imaged by Spitzer contain a host of young stars, composed mostly of hydrogen and helium. The discovery of these unexpectedly-bright galaxies could provide new clues about one of the most important cosmic events in history: the “Epoch of Reionization.”The new research, published in the journal Monthly Notices of the Royal Astronomical Society in April, required Spitzer to stare into the same region of sky for over 200 hours, studying the ancient cosmos as part of a campaign known as the GOODS Re-ionization Era wide-Area Treasury from Spitzer (GREATS). Another great, the Hubble Space Telescope, also contributed to the data. Post a comment More space news Tags NASA Space With Spitzer trained on a region of the sky for so long, it was able to gather light that had traveled across the universe to reach us. In what amounts to a cosmic staring contest, Spitzer didn’t blink. The telescope detected faint infrared signals from 135 distant galaxies, produced by high levels of ionizing radiation. It’s a particularly important finding, because ionizing radiation is believed to have contributed to the Epoch of Reionization in the early universe — a cosmic transformation that shaped the universe as we know it today. Astronomers are still stumped as to what exactly caused these changes, but the early galaxies detected by Spitzer may provide some clues.”Our latest Spitzer result reveals how different these early galaxies are to those at later times and pinpoints our sample as a key set for providing insights into how galaxies so efficiently reionized the universe,” said Garth Illingworth, a co-author on the new study. The results were surprising for Michael Werner, project scientist with Spitzer at NASA’s Jet Propulsion Laboratory.”We did not expect that Spitzer, with a mirror no larger than a Hula-Hoop, would be capable of seeing galaxies so close to the dawn of time,” he said in a statement. “But nature is full of surprises, and the unexpected brightness of these early galaxies, together with Spitzer’s superb performance, puts them within range of our small but powerful observatory.”  Spitzer, launched in 2003, is an infrared observatory in an Earth-trailing orbit operated by NASA and the California Institute of Technology. It carries three instruments that allow it to “see” across the wavelengths of infrared light, providing spectacular views of the gaseous, dusty distant cosmos.center_img Sci-Tech 0 Your wedding ring came from a neutron star explosion, 4.6 billion years ago Scientists just observed a crash between two neutron stars Gravitational wave detectors upgraded to hunt for ‘extreme cosmic events’ NASA Spitzer telescope celebrates 15 years of astounding images 15 Photoslast_img read more

Tesla unveils Tesla Energy batteries for homes and business

first_img Tesla Motors on unveiled Tesla Energy on Thursday (30 April) – storage systems or batteries for homes, companies and utilities that will expand its business beyond electric vehicles and tap into a fast-growing area of the energy industry.Chief Executive Elon Musk said the companys goal was to Welcome everyone, basically to the announcement of Tesla Energy. What I am going to talk about tonight is a fundamental transformation of how the world works, how energy is delivered across the earth.In Teslas view, such storage systems could become part of a fossil-fuel-free lifestyle in which people can have solar panels on their roof generating electricity to power their home and recharge their electric car batteries.The smallest battery unveiled on Thursday, known as Powerwall, is housed in a six-inch-wide container that is meant to be hung inside a garage or on the outside wall of a house.At $3,500 (£2274) for a 10kWh model, excluding inverter and installation prices, the Powerwall can be used for backup power or to store solar energy.If youre thinking of buying a battery, well what does this provide you? Well it gives you piece of mind, if there is a cut in the utilities youre always going to have power. If youre in a place that is very cold, you dont have to worry about being out of power if there is an ice storm. You could actually go, if you want, completely off grid. You could take your solar panels, charge the battery packs and thats all youd use. So it gives you safety, security and it gives you a complete and affordable solution, and the cost of this is $3500 , Musk announced.Tesla has several hundred batteries installed with SolarCity systems in California already. The growth of those projects has been helped by a subsidy from Californias public utility regulator.The CEO surprised the audience by announcing that the evening had in fact been powered by stored sunlight.Oh, wow this grid is actually zero, this entire night has been powered by batteries. (clapping and cheering) Not only that, but the batteries were charged by the solar panels on the roof of this building. So this entire night, everything you are experiencing is stored sunlight, Musk said.Utilities have also been seeking out energy storage to help manage increasing amounts of renewable energy on the grid. To address that market, Musk unveiled what he called the power pack, a 100 kWh battery block that is meant to help smooth out power from intermittent solar and wind energy production or add energy to the grid quickly when demand levels are high.Tesla already has several utility-scale batteries deployed on the grid in California, which requires its biggest utilities to source large amounts of energy storage.So we want to show people that most importantly that this is possible, if you look at that, that is the future we could have, where the curve slowly rolls over and goes to zero, no incremental CO2. Thats the future we need to have, and thats something that, and the path that Ive talked about, the solar panels and the batteries. Its the only path that I know that can do this and I think its something that we must do and that we can do and we will do, Musk said.Tesla will initially manufacture the batteries at its automobile factory in California but will move production to its planned gigafactory in Nevada next year.Deutsche Bank estimated sales of stationary battery storage systems for homes and commercial uses could yield as much as $4.5bn in revenue for Tesla. Analysts expect Tesla will build stationary storage systems around the same basic batteries it will produce for its vehicles at the large factory the company is building in Nevada.Though valued at just $200m in 2012, the energy storage industry is expected to grow to $19bn by 2017, according to research firm IHS CERA.Tesla is not the only player in energy storage. Coda Energy, which rose from the ashes of a failed EV maker and is now owned by Fortress Investment and startups backed by the likes of Total, GE and Siemens are among the many companies going after shares of the stationary storage market. Closelast_img read more

BCL forms probe body over Mondays clash

first_imgA three-member committee has been formed to look into Monday’s clash between factions of Bangladesh Chhatra League (BCL) after announcement of a 301-member central body, reports UNB.New vice-president Al Nahian Khan Joy, law affairs secretary Fuad Hossain Sahadat and research secretary Pallab Kumar Barman are members of the committee.It has been asked to submit a report within 48 hours, said a Bangladesh Chhatra League press release issued on Monday night.At least seven people were injured during the clash at Madhur Canteen. Witnesses said the melee took place when a number of BCL activists, who did not get any post in the new committee, held a press conference in the canteen.last_img

Monsoon rains kill 17 in Nepal 6 in India

first_imgA Nepali resident walks through floodwaters after the Balkhu River overflowed following monsoon rains at the Kalanki area of Kathmandu on 12 July, 2019. Photo: AFPAt least 17 people have been killed across Nepal after torrential monsoon rains induced floods and landslides, officials said Friday.In neighbouring north-eastern India the death toll from floods rose to six, with 870,000 people affected, officials said.Heavy rains since Thursday have hit several districts in Nepal, especially in the country’s eastern region and the southern plains.According to figures released by Nepal’s police, 17 people have died, seven are injured and another seven have been reported missing.Three were killed when a wall collapsed in the capital Kathmandu.”Local authorities and our security officials are all working to rescue people and bring them to safety. Helicopters are on standby if needed,” Home Ministry official Umakanta Adhikari told AFP.Indian villagers and goats stand near the portion of a broken bridge connecting nearby villages, carried away by floods, at Taipu village some 25 kms from Siliguri on 12 July, 2019. Photo: AFPNepal’s weather department warned Thursday that heavy rains were expected to continue for two days, and advised people to stay alert.Nearly 150 people died last year in Nepal during the rainy season, which typically begins in late June and lasts until the end of August.In the northeastern Indian state of Assam monsoon floods have now inundated 21 districts, officials said Friday.In Bangladesh aid groups were providing rations to Rohingya refugees in the southeast of the country with the UN World Food Programme saying Friday that two people including a child had died.last_img read more

Relish the king of fruits this summer

first_imgSummer is the time to drool over mangoes and to feast over their succulent flavours. The level of excitement increases manifold when this most loved summer fruit rules the South East Asian palate. The oomph of this most sought after fruit has been relished over two decades with chef Veena’s ‘Summer Collection Menu’ at The Spice Route, The Imperial, New Delhi, until July 31 from 12:30pm to 2:45pm and 7pm to 11:45pm.The whiff of newness reflects now in this season’s menu featuring Chef’s selections and creations inspired from the regions of Kerala, Srilanka Thailand and Vietnam. Under the umbrella cuisine of The Spice Route, the menu promises to steal hearts with specialties put together with ripe or raw mangoes, complemented with Chef’s specials. Also Read – Add new books to your shelfThe summer fruit comes alive in ‘Yum Mamu Ang Kung Krob’– a spicy raw mango salad with dry shrimp and battered fried prawns, ‘Maambalam Okrathoren’– wok fried lady fingers with kerela spices and sliver of raw mango, ‘Tom Som Mamuang’ and a lot more. The chef has perfectly balanced spices with mango in all her offerings, for a heavenly treat.”The ‘Summer Collection menu’ has been close to my heart since the time The Spice Route opened doors, and invoked timelessness for me, each time I started planning it. The name takes inspiration from the fashion fraternity and the menu is whipped up to dish out something unique for the patrons from the landmark kitchen of this world famous South East Asian restaurant,” said Chef De Cuisine Veena Arora. Also Read – Over 2 hours screen time daily will make your kids impulsiveTalking about the choice of fruit, she said, “The interesting raw and ripe mango based recipes are refreshing like a celebration of the season. Most of them are my own creations, wonderfully complemented by rice, chicken, prawns, sole fish, veggies and exotic spices.Also as I hail from Thailand, I want to reflect the love of blending Thai cuisine with fruits, in my menu. That is the reason the complete menu revolves around mango, the favourite summer fruit.”last_img read more