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NASA told us it was announcing something big today, and it's certainly come up with the goods: the space agency says images from the Mars Reconnaissance Orbiter (MRO) have revealed compelling evidence of liquid brines flowing across the planet's surface. The seasonal rivers of salty water mean there's a greater chance of Mars being able to support life now or in the future. As far as space exploration goes, it's one of the most significant and historical announcements in many years, but it's not completely unexpected. NASA scientists have known for some time about the appearance of gullies or dark streaks on the surface of Mars during warmer weather - while it was suspected that trickling water was the cause, the new evidence means NASA is now almost certain. What's changed is that the agency's scientists have managed to identify and track hydrated salts in these gullies - using an image spectrometer on the MRO, the NASA team has been ab...

world’s first manned amateur drone flight, with an intrepid British inventor hitching 54 drones together and then taking them for a spin down at his local park.   There are hobbyists and then there are hobbyists . It’s safe to say this guy is the latter. What you’re seeing here is what may well be the world’s first manned amateur drone flight, with an intrepid British inventor hitching 54 drones together and then taking them for a spin down at his local park. “The Swarm”, which is the name of this seemingly home-designed contraption, is described by its creator as a “Manned Aerial Vehicle Multirotor Super Drone”. Footage of its maiden human-carrying flight was uploaded to YouTube by user gasturbine101 last week, although at this point the exact identity of the world’s first drone pilot remains unknown.

Now, according to a website, the US space agency NASA has confirmed that the Earth will experience 15 days of total darkness in November this year. On 14 July 2015, the web site Newswatch33, a fake news site, published an article titled “NASA confirms Earth will experience 15 days of complete darkness in November 2015.” It is said that the event, according to NASA, hasn’t occured in over 1 million years. Astronomers from NASA have indicated that the world will remain in complete darkness starting on Sunday, November 15, 2015 at 3 a.m. and will end on Monday, November 30, 2015 at 4:15 p.m. According to officials, the event, known as “November Black Out”, will be caused by another astronomical event between Venus and Jupiter. The whole phenomenon has been explained in a highly scientific way. The article also stated that Charles Bolden, who was appointed to head of NASA by President Obama, issued a 1000 page document explaining the event to the White House. While Charles Bo...

Roller Coaster G-Forces Roller coaster rides are notorious for creating accelerations and g-forces which are capable of transforming stomach contents into airborne projectiles. As a rider starts the descent down the first drop, she begins a one-minute adventure filled with various sensations of weightlessness, heaviness, and jerkiness . The parts of the ride which are most responsible for these sensations of weightlessness and heaviness are the clothoid loops . The explanation for the various sensations experienced on a roller coaster loop are associated with Newton's laws of motion and the physics of circular motion. A clothoid loop has a constantly curving shape with sections which resemble the curve of a circle (in actuality, it is considered to be a section of a cornu spiral having a constantly changing radius). A coaster rider is continuously altering her direction of motion while moving through the loop. At all times, the direction of motion could be descr...

Gate 2016 Notification out.... Indian Institute of Science (IISc) Bangalore will be organising GATE 2016 online exam this year. Start of online Registration of applications : 1.09.2015 Last date for Registration : 1.10.2015 Exam date : 30 Jan -7 Feb 2016(sat &sun nly) Issue of online admitcard/hall ticket : 17.12.2015 Exam fees : Gen/OBC. ?1500 SC/ST. ? 750 Female candidates ? 750 Declaration of Results : 19.3.2016 For more details,visit www.gate.iisc.ernet.in Share this to all your friends final year Engg students.