Scientists succeed in implanting hallucinations in animal brain
In a work published in the journal science on 1st July, Scientists have successfully induced visual hallucinations in mice by stimulate a handful of cells in their brains using light. The achievement is extremely significant as the findings presented would help to improve our understanding of how brain interprets things based on vision.
Scientists creates history as Quantum entanglement is photographed for the first time
Photos of quantum-entangled particles. Credit:Paul-Antoine Moreau et al., Science Advances
The above picture represents the first-ever photograph of quantum entanglement, which Einstein used to call"spooky" pairing of particles. The finding is a solid evidence that quantum entanglement which Einstein disbelieved till his death is real.
Two huge black holes each one about 800 million times that of the sun have headed for a collision says astronomers. Once they collide they will emit gravitational waves which will creates ripples in space-time. According to a study by Andy Goulding, an associate research scholar at Princeton University and his colleagues this titanic collision will be like no other collisions detected so far. The space-time disturbance arising as a result of this event will be immense. However it will take billions of years to reach us and thus get detected. This study is published in The Astrophysical Journal Letters.
In a first Japan collects samples from a distant asteroid
Ryugu being drilled (credit:JAXA)
For the first time in the history of mankind a spacecraft has landed on an asteroid named Ryugu and collected underground samples. The milestone took place on Thursday and the Japanese Aerospace Exploration Agency (JAXA) became the first to achieve it. This is a great feat as the samples collected by ‘Hayabusa-2’ may provide clues to the origin of the solar system. A similar mission is being planned my NASA on another asteroid, Bennu.
Primordial Black Hole theory of dark matter may break down at gallactic centre.
Primordial black holes (PBH) could have formed right after the big bang explosion which created the entire universe. This is a result of the fluctuation in the density of the Universe which induced a gravitational collapse of the dense regions of the blooming cosmos. Many scientists (including Hawking's) consider these hypothetical black holes to be the source of the mysterious dark matter which contributes roughly 27 percentage of the mass of this universe. However, this concept has always been opposed by scientists who favour an exotic elementary particle origin of the dark matter.
Stunning images of a dying star captured by Hubble space telescope.
Image Credit: Jon Morse (University of Colorado), Kris Davidson (University of Minnesota), and NASA/ESA
Eta Carinae is a binary star which is 7,500 light-years away from earth, with the component stars weighing 90 and 30 solar masses, respectively. This binary system exploded in 1838 releasing immense quantity ofradiation across the entire electromagnetic spectrum out into space. The bunch of materials emitted as a result of this mega explosion created the Homunculus Nebula. For years this dying star system has not been making any news. Nevertheless, the recent images taken by Hubble space telescope has put them in the lime light yet again. The new images show that the dying stars are still active within its dust cover.
According to astronomer Nathan Smith of the University of Arizona, lead investigator of the Hubble program, "We had used Hubble for decades to study Eta Carinae in visible and infrared light, and we thought we had a pretty full account of its ejected debris. But this new ultraviolet-light image looks astonishingly different, revealing gas we did not see in either visible-light or infrared images,"
The perfection of AI Created 3D Replica of Our Universe stuns scientists
The universe is infinitely finite and its entire design has an element of mystery associated with it. For centuries mankind has been trying to study this mysterious cosmos of ours using all kind of available technology. Researchers recently used artificial intelligence to simulate the universe. The new simulation reported in the journal Proceedings of the National Academy of Sciences created a virtual version of the cosmos for simulating different conditions for the universe's beginning. Though the simulation did surprisingly well, no one including the scientist who created this simulation fully understand how it works.
According to co-author of the research paper, Shirley Ho, a theotetical astrophysicist at the Center for Computational Astrophysics in New York City. "It's like teaching image-recognition software with lots of pictures of cats and dogs, but then it's able to recognize elephants. Nobody knows how it does this, and it's a great mystery to be solved"
A solar eclipse occurs when the moon comes between the sun and the earth. A total eclipse only occurs when the sun is fully shadowed by the moon. Such a total eclipse will be happening on the 2nd of july 2019. It is expected to last for about four minutes and 33 seconds which is longer than the one happened in August 2017 that lasted for two minutes and 40 seconds.The only land mass that this only total solar eclipse of 2019 will encounter is a small portion of Chile and Argentina in South America. In Asian countries like India, Pakistan, Nepal and Sri lanka the eclipse won't be visible as it occurs at night.
Video Credit: History Channel, besend(youtube channel)
The UN General Assembly in December 2016 declared June 30 as International Asteroid Day, in order to "observe each year at the international level the anniversary of the Tunguska impact over Siberia, Russian Federation, on 30 June 1908, and to raise public awareness about the asteroid impact hazard."
Tunguska event is a mysterious explosion that occured near the Stony Tunguska River by the impact of an unknown celestial object. The mysterious object exploded in a sparsely populated region, the Central Siberian Plateau. It produced the energy force roughly equal to 1000 times the force of the atom bomb that was dropped on Hiroshima. This massive explosion destroyed a massive stretch of a conifer forest of 2000 square kilometres, completely burning about 80 million trees. The disaster is said to have killed hundreds of locals. This horrific incident was classified as an impact event despite of the fact that. no impact crater has been found. The mystery around this disaster still looms as we celebrate yet another asteroid day.
Astronomers determine precise location of non-repeating fast radio burst
Video Credit: Event Horizon (Youtube channel)
Fast radio bursts (FRBs) are brief radio emissions from distant astronomical objects. Sensitive radio telescopes are required to detect these weak signals which usually last only for a few milli seconds. Some of these signals repeat, but most are single bursts and therefore its is extremely difficult to trace their source.
FRB 180924 was detected in September 2018 by a 36-antenna array of radio telescopes-ASKAP, which is functioning in Western Australia. It is only now that the astronomers could detect the precise location of this single transient pulse. According to Dr. Adam Deller, an astronomer at Swinburne University of Technology, " It comes from a massive galaxy that is forming relatively few stars. Now we can pinpoint where they come from, we can use them to measure the amount of matter in intergalactic space.”
Original recording of man's first steps on the moon to be auctioned
Video Credit: Sky News
Gary George, was a college student when he bought about 1,100 reels of NASA videotape for about $218 at a government surplus auction in 1976. Never had he thought that these tapes have anything of value on them. Now, after 33 years as he is prepares to auction these tapes, three among them can make him a millionaire. Among these three is the one which captures the images of the first steps on the moon by astronaut Neil Armstrong, along with his famous words, "That's one small step for man, one giant leap for mankind."
NASA announced this thursday that it will be sending a drone named 'Dragonfly' to saturns largest moon -Titan. The main purpose of this mission is to probe if this icy moon can support microbial life. The drone will be launched in 2026 and it will reach Titan by 3034. The development cost of the project will be 850 million USD.
Scientists discover an entirely new quantum states between two graphene layers
US scientists have produced completely new quantum states by assembling graphene in a double-layer vertical stack. The resulting graphene sheets in close proximity are found to generate entirely new quantum states. The significance of this finding according to physicist Jia Li from Brown University is "In terms of materials engineering, this work shows that these layered systems could be viable in creating new types of electronic devices that take advantage of these new quantum Hall states."
A harmless asteroid about the size of a refrigerator has entered earth's atmosphere and burned up just few minutes after it was observed by telescopes in Hawai. This small rock from space named '2019 MO' appeared in the south of Puerto Rico.
The bright flash in the pic is created when the asteroid struck Earth’s atmosphere on June 22, 2019, over the Caribbean. Image via RAMMB/CIRA/Colorado State University.
Superbugs may be entering you through plants-Says new study.
A new study has suggested that certain plant based food can give anti-biotic resistance to the microbes residing in our stomach. These superbugs can then colonise the intestine for years. As they leave our body they are capable of producing infections like urinary infection.
High level of methane detected on mars-Is this a sign of alien life on the red plant?
NASA's Curiosity rover has detected large amount of methane (21 parts per billion units by volume) on Mars. According to NASA this is a significant discovery as microbial life is an important source of methane on Earth. However methane can also be created due to interactions between certain rocks and water.
Scientists find out why the pace of ageing varies in men and women
Scientists have found that decline of oestrogen can accelerate ageing in women after 50 years. According to Sonja Windhager, the head researcher of the team which probed made the abovementioned finding " Men and women age similarly up to the age of 50. Its a linear progression. But at the age of 50, for women, it goes really fast. It doesn't speed up at 50 for men.After the age of 50, the best predictor of how old you look is your age from menopause. The onset of menopause varies in women quite a lot"
Two habitable planets discovered very close to our solar system
Two new Earth-like planets around one of the closest stars within our galactic neighbourhood-the Teegarden. These planets are located only 12.5 light years away orbiting the Teegarden star -which is in the direction of the constellation of Aries. The findings have been published in the journal Astronomy and Astrophysics.
New theory says that we are living inside a gigantic black hole!
The most accepted model about the origin of the universe- the big bang- explains that as time goes on, matter continues to spread-out and the universe become less dense. This means that in the past the universe have originated from an infinitely dense 'cosmic-singularity'. The singularity mentioned here is different from the singularity of black holes. Now scientists from the University of Waterloo has came up with a new concept in which the entire universe resides in the event horizon of a primordial four dimensional black hole of a five dimensional star. However, a comprehensive theory based on this concept is yet to be developed.
Evidence for Milky ways collision with another galaxy emerges
The ripples in the hydrogen gas that forms the Milky Way's outer disc has always been doubted as a result of galactic collision. Astrophysicist Sukanya Chakrabarti of the Rochester Institute of Technology back in 2009 predicted the existence of a dwarf galaxy dominated by dark matter Which may be the other participant of this giant collision. This giant called Antlia 2 which is about the size of the large Magellenic cloud later showed up in the second Gaia mission data release last year. Now new research has substantially proved a collision between the Milky way and Antlia 2. Using the new Gaia data, the team calculated Antlia 2's past trajectory which produced not only the dwarf galaxy's current position, but also the ripples in the Milky Way's disc which is an evidence of a collision about a billion years ago. The findings has already been submitted to The Astrophysical Journal Letters.
Observe Jupiter tonight as it is in 'opposition'
Image credit: pixabay
Tonight is the best time to see Jupiter this year as it will be in opposition. This means that the Sun, the earth and the cloudy planet will be aligning in a straight line today. This happens once in every thirteen months. So get your telescope and prepare to watch this event.
Can the ingenious human brain save the earth from being swallowed by a dying sun?
Towards the end of its life, a dying sun will become a red giant and as it takes its last fiery breath, it will make the earth inhabitable by boiling the blue planet. Scientist have this in their mind and that's why they have been looking for earth-like planets in and out of our galaxy. But the question is, even if we find such a planet, what if we could not develop the technology to inhabit it with in 5 billion years-the remaining life time of our sun. The question is too hypothetical, but not irrelevant. The only way to expand the life of mother earth in such a period would be to change its orbit. This is impossible with the current technologies that we have. However scientists are still optimistic. Recently, University of Glasgow space engineer Dr Matteo Ceriotti has proposed some radical solutions to help Earth change orbit. He said: “I have come up with a thought experiment about what we could do with our current technology in order to move the orbit of Earth father away – say towards the orbit of Mars.” According to him, this can be done by exploiting the gravitational attraction of asteroids which pass by Earth’s vicinity to change the orbit of the Earth.
Dr Ceriotti added “With this idea we would need a huge number of spacecraft to be able to fly to asteroids and then divert the asteroids into an orbit that passes within Earth’s vicinity."
Latest simulations of black holes solves the mystery of how they consume matter
Photo Credit: pixabay
Black holes, which are born when heavy stars collapse in on itself, are considered to be one of the most bizarre things in the universe. Its gravitational pull is so immense that even light will not escape out 9f it and hence the name. Black holes form an accretion disc around it as they sucks in matter. The interaction of this disc with the super dense interior of the blackhole has been a mystery. However, this thursday researchers from Northwestern University, Oxford University released a detailed simulation of this interaction thus solving the mystery. Their computations satisfactorily account for magnetic turbulence, which occurs when different particles churn at different speeds within the accretion disk. This is the electromagnetic effect that causes matter to fall to the centre of the black hole.
The concept of multiverse is already popular amount science scholars. But have you ever thought of another universe which is a mirror image of others? According to physicist Leah Broussard, there may exist universe which is identical to ours but inverted. This means that such a universe would contain mirror atoms, mirror molecules, mirror sun's etc. The concept seems bizarre, but Leah and his team are optimistic. According to them the advantage of such a concept is that in such a scenario it is plausible to assume that some particles are capable of switching from one world to another. Such a concept will be handy in explaining one of the most mysterious things in the universe- the dark matter. As Leah and his team is gearing up to test his theory, it's reasonable for a common man to ask this question; Would be even encounter a mirror Human?
It was a breakthrough in particle' physics when scientists discovered Higgs boson- the 'God particle' which interacts with elementary particles to give them mass, using large hadton collider ( LHC) back in 2012. Now a team of researcher have come up with an interesting hypothesis. It's a fact that the Higgs boson that was detected in the LHC has been much lower in mass than the theoretical estimates. Does that mean there exist other different types of Higgs bosons? Although there exist no such evidence, scientist have already started probing this. If such a heavy Higgs boson indeed exist, then a reconfiguration of our understanding of standard model is inevitable. The work has been published online in the preprint journal arxiv.
1800 new supernovae spotted in distant universe
Fig : A supernova explosion (Courtesy NASA)
A team of researchers from the Kavli Institute for the Physics and Mathematics of the universe , Tohoku University, Konan University, the National Astronomical Observatory of Japan, School of Science, the University of Tokyo, and Kyoto University have discovered thousands of supernovae which exist about eight billions light years away from our planet. They discovered it using Subaru telescope, which is 8.2 metre instrument in Hawaii. The discovery is supposed to be helpful in calculating star distance and may also add to the present knowledge regarding the expansion of the universe. The work has been published in 'Publications of the Astronomical Society of Japan'.
Can we save the Schrodinger's cat? Yes, says some scientists.
The Schrödinger's cat is a thought experiment proposed by Schrodinger which demonstrates the unpredictability of a quantum system. He imagined a scenario in which a cat is locked in a closed box with opaque walls. Also in the box is a source of radioactive decay, a Geiger counter, and a flask containing poison. When counter detects the radioactive decay of a single atom, it breaks the poison bottle, which results in the cats death. So how could one predict if the cat is dead or alive after say, a 1 hour past sealing the box. The condition is that you can't open the box. Once you open the box one random result occurs, ie, the cat is either dead or alive. According to Schrodinger when no observation is made, the cat is both dead and alive ( quantum superposition) and there is no way one could control the outcome of an observation. The random outcome at the time of observation is due to what is termed as' quantum jump'. These quantum jumps are difficult to control and hence the outcome of the observation. However, recently a team of researchers from Yale University claim to have done the impossible. They used artificial atoms called qubits to manipulate the quantum jump and thereby controlled the outcomes of the experiment. For this they designed an experiment to indirectly observe a superconducting qubit, using three microwave generators to irradiate the qubit in a sealed enclosure. The microwaves from the first generator is used to excite the quibit from ground state to excited states. However the scientist observed that this transition is gradual rather than abrupt. Hence another microwave pulse can send the quibit back to the ground state after it is detected. This means that we can prevent the death of the Schrondinger's cat!! However there are many complications involved in completely manipulating a quantum system. Only time will tell how much acceptance this experiment would get in the scientific community. The paper is published in the journal 'Nature'.