Nature Hub

 From - Popular Mechanic,  By  - Robert Lee, Eddited by - Amal Udawatta, When it comes to making predictions,  Albert Einstein’s theory of general relativity   is pretty much unbeatable, at least in physics. The theory says that objects of mass “warp” the very fabric of spacetime, and that this warp gives rise to the force of gravity. The theory also led to the suggestion of a multitude of phenomenons, events, and objects that astronomers and physicists would eventually discover in the   cosmos . Yet one major cosmic object still hasn’t been found: a wormhole. Unlike black holes, wormholes remain purely hypothetical. If they exist, they have remained undetected. But physicists have just discovered a promising new way to possibly find them. Predicting the Existence of Wormholes General relativity predicted  black holes  as objects of tremendous mass so densely packed they create a region of space with such intense  gravity  that not even ...

  From Sky & Telescope, By - Monica Young, Edited by - Amal Udawatta   The X-ray data from Chandra is colored purple in this image, showing the hot-gas halo that surrounds 3C 297. Radio data from the Very Large Array is red and highlights the black hole-powered jets. Visible-light data from Gemini is green and mostly comes from the galaxy itself. Visible light and infrared data from the Hubble Space Telescope (blue and orange, respectively) have also been included. The field of view of this image is too small to show any of the surrounding galaxies, none of which are at the same distance as 3C 297. X-ray: NASA / CXC / Univ. of Torino / V. Missaglia et al.; Optical: NASA / ESA / STScI & International Gemini Observatory / NOIRLab / NSF / AURA; Infrared: NASA / ESA / STScI; Radio: NRAO / AUI / NSF   A large galaxy spewing a black hole–powered jet might have eaten its neighbors, leaving it on its own. When the universe was only a third its current age, most galaxy clu...

  By Pallab Ghosh Science correspondent, Edited by Amal Udawatta, IMAGE SOURCE, BBC NEWS Image caption, Produce like these gene-edited tomatoes with added vitamin D could be sold commercially in England The law has changed to allow gene-edited food to be developed and sold in England. The government hopes  the technology will boost jobs and improve food production , but safety and environmental worries mean it is not allowed in other parts of the UK. What is gene-edited food? For many years, farmers produced new varieties through traditional cross-breeding techniques. They might, for instance, combine a big but not very tasty cabbage with a small but delicious one to create the perfect vegetable. But this process can take years, because getting the hundreds of thousands of genes in cabbages to mix in just the right way to produce large but tasty offspring is a matter of trial and error. Genetic methods remove the random element. They let scientists identify which genes determi...

 From - Sky & Telescope, By - Bob King Edited by -Amal Udawatta, The Big Dipper ascends the evening sky at nightfall in mid-March. Using Polaris and the Dipper's Pointer Stars, you can make a simple clock. Bob King Time-telling goes way back. Early humans watched the daily and nightly perambulations of the Sun and Moon to mark the passage of time. Even the shadow of a stick jabbed into the ground could serve as a primitive clock. The earliest manufactured timekeeping devices were sundials and water clocks. In a water clock, water dripped through a hole in the bottom of one container into another. Tower clocks that marked the hour by sounding bells appeared in the late 13th century. Clocks with familiar faces and hands made their appearance in the 1700s. Three hundred years later, cell phones and digital clocks help us keep track of the time. Cell phones get their time directly from  Global Positioning (GPS) satellites  or through the nearest cell tower, which also use...