Fact About The World. Online

Radiation is energy that travels through space or matter in the form of particles or electromagnetic waves.  It occurs naturally throughout the universe and is also produced by many human-made technologies. Some of the most well-known types of radiation include:  Alpha radiation consists of heavy, positively charged particles.  It can be stopped by a sheet of paper or even the outer layer of human skin, but it can be harmful if radioactive material is inhaled or swallowed.  Beta radiation is made of fast-moving electrons or positrons.  It can travel farther than alpha particles and can penetrate paper, though it is usually blocked by materials like plastic or aluminum.  Gamma radiation is a very high-energy form of electromagnetic radiation.  It has no mass or electric charge and can pass through many materials, requiring thick lead or concrete for effective shielding.  Neutron radiation is made of free neutrons, typically released durin...

Only 5% of the Universe Is Visible — The Remaining 95% Is Still One of Science's Greatest Mysteries Only about 5% of the universe is made up of everything that humans have ever seen—every planet, star, galaxy, nebula, black hole, and even our own Milky Way. The remaining 95%, according to the current standard model of cosmology, is comprised of two enigmatic components: dark energy (approximately 68%) and dark matter (approximately 27%). Despite decades of research, scientists still do not know exactly what either of them is.  Dark matter is invisible because it does not emit, absorb, or reflect light, making it undetectable by ordinary telescopes.  However, astronomers know it exists because of its powerful gravitational effects.  One of the strongest pieces of evidence comes from the way galaxies rotate.  In our Solar System, planets farther from the Sun move more slowly because gravity weakens with distance.  Earth travels around the Sun at roughly 30 k...

ONE OF THE BIGGEST STARS IN THE UNIVERSE IS ABOUT TO DIE Around 160,000 light-years from Earth, an enormous red supergiant called WOH G64 is approaching the end of its life. This star is so gigantic that if it replaced our Sun, it would stretch nearly to Jupiter's orbit, swallowing Mercury, Venus, Earth, Mars, and everything in between. However, stars of this size do not live long. When their fuel runs out, gravity prevails because they burn through it so quickly. The core collapses in an instant... Then comes a supernova, one of the universe's most powerful explosions that can briefly shine brighter than a galaxy. The incredible part is this: because WOH G64 is 160,000 light-years away, the explosion may already have happened.  Its light simply hasn't reached Earth yet.   There's no danger to our planet. When the light finally arrives, it will become one of the greatest astronomical events ever witnessed by humanity. Astronomers have already observed vast...

There Is a Planet With No Continents—Only a Global Ocean Imagine a world where there are no continents, no islands, and no beaches—only a vast ocean covering the entire planet.  Astronomers believe TOI-1452 b may be one of the best examples of such a "water world."  Located about 100 light-years from Earth in the constellation Draco, TOI-1452 b was discovered using NASA's Transiting Exoplanet Survey Satellite (TESS) and later studied with observations from the Canada-France-Hawaii Telescope (CFHT).  With a mass that is nearly five times that of Earth and a radius that is approximately 1.67 times that of Earth, the planet is considered to be a super-Earth.  Its unusually low density compared with a purely rocky planet suggests that a significant portion of its interior could be made of water.  Scientists estimate that up to 30% of the planet's total mass may consist of water—far more than Earth's, where water accounts for less than 0.1% of the planet's mass....

QS World University Rankings 2027 | TopUniversities.com   Explore the world’s top universities Compare study options using globally recognised rankings informed by academic reputation, employability and graduate outcomes, student experience and international opportunities.  Why millions of students trust QS  Explore more than 1,500 universities worldwide  Compare subjects, study destinations and student experience  Employability and career insights go beyond academic performance. Take the next step by connecting with universities and accessing expert guidance; visit QS Apply  For educators and sector professionals Download the QS Digital Solutions Pack to show millions of people the strengths of your university. 1.  Massachusetts Institute of Technology (MIT) Location: Cambridge, United States 2. Imperial College London, London, in the United Kingdom. Explore university 2. Stanford University Location: Stanford, United States 4. Univers...

This article is about mountains by height above sea level.  For a list of mountains by topographic prominence, see List of mountain peaks by prominence.  For other uses, see List of mountains.  There are at least 108 mountains on Earth with elevations above sea level of at least 7,200 meters (23,622 feet; 4 miles). 14 of these are higher than 8,000 meters (26,247 feet; 5 miles) [ 1] The vast majority of these mountains are part of either the Himalayas or the Karakoram mountain ranges located on the edge of the Indian Plate and Eurasian Plate in China, India, Nepal, and Pakistan. Discussion  Figure demonstrating the concept of topographic prominence: The prominence of a peak is the height of the peak's summit above the lowest contour line encircling it and no higher summit.  For example, vertical arrows show the topographic prominence of three peaks on an island.  A dotted horizontal line links each peak (except the highest) to its key col.  The d...

Our Future Life After 100 Years Imagine waking up one hundred years from now.  The world would be very different from today.  It is anticipated that advancements in space exploration, medicine, science, and technology will alter how people live, work, and communicate. Although no one can predict the future with complete certainty, many experts believe that life after 100 years will be more connected, intelligent, and sustainable.  One of the biggest changes will be in technology.  Artificial intelligence and robots will become part of everyday life.  Intelligent robots may assist people with household chores, healthcare, education, and transportation.  Based on the requirements of their occupants, smart homes will automatically adjust lighting, temperature, and security. Virtual assistants will understand human emotions and provide personalized support for work and daily activities.  Transportation will also undergo a major transformation.  S...

For the first time, astronomers have captured the formation of a planet on camera. For many decades, scientists held the belief that young planets develop within the gloomy openings cut into the whirling disks of gas and dust that surround newborn stars.  Now, an enormous protoplanet that is actively growing within its birth disk is the first direct evidence of this process that has been captured by astronomers. Using the powerful MagAO-X adaptive optics system on the Magellan Telescope in Chile, an international team imaged a forming planet named WISPIT 2b.   The planet was identified by its distinctive H-alpha glow—a signature produced as hydrogen gas falls onto the growing world.  This is exactly the type of light astronomers expected from a giant planet still accumulating material from the disk around its young star.  The observations also uncovered a second promising protoplanet candidate, suggesting the system may already be building multiple worlds....

How to Tell If Your Computer Has Been Hacked  Has your computer been hacked? Internet users with lackluster security aren’t the only ones racing to Google in a panic to search “how to tell if my computer has been hacked.”  No matter how careful you are online, you’re a potential target for hackers.  (Yes, even if you use good passwords and practice smart online security.)  Giant data breaches at megacorporations may get the most media attention, but cybercriminals don’t discriminate.  “The unfortunate truth about cybersecurity is that many people don’t think about it until it’s too late,” says Hari Ravichandran, founder and CEO of consumer cybersecurity company Aura Identity Protection.  The FBI received nearly 860,000 complaints about concerns regarding internet security in 2024, with reported losses exceeding $16 billion—a 33% increase from the previous year. Hackers will prey on anyone with vulnerabilities, from easy-to-guess passwords to public-faci...

A writer I know pitched 47 places after a layoff.  Nothing.  Not rejection — silence, which is worse, because you can't learn anything from it.  After that, she switched from pitching the publications that she had grown up reading to those that actually had budgets. Same clips.  Same voice.  Same writer.  Three pieces sold in a month.  Because nothing about her changed, this keeps coming to mind. Her craft didn't level up in four weeks.  The only variable that changed was the address on the envelope.  The product desk of a major newspaper typically pays $500 for shorter reported pieces, which was sitting in the other inbox all along. A tech journal that pays articles up to £500. Unglamorous, repeatable, real.  None of them were on her list, because none of them were on anyone's list.  We tell writers to get better when the real problem is almost always distribution.  You are not being turned down. Editors whose inbo...

Are venomous snakes really harmless if you don't provoke them? A 28-year-old Indian man wanted to demonstrate precisely that. And he succeeded impressively.  Neelam Kumar Khaire spent 72 hours with special companions in a glass cabin. There were 27 monocell cobras, 24 Russell vipers, 9 binocell cobras, 8 banded kraits, and 4 other snakes.  Khaire wanted to educate the public that snakes don't attack unless provoked.  That was in 1986.  He didn't understand why people had tried to persuade him that snakes were so dangerous, even when he was a child. He already owned a small snake collection and then read a report about the world record for removing hair from venomous snakes.  At the time, it took 50 hours. He decided to break this record.  And so he sat in a glass house with all those snakes.  He was thought to be insane by some. He often has to remove them from his body when they crawl onto him.  He stayed there with 72 snakes for 72 hou...

What is a paid girl scam? A "paid girl scam" is usually a restaurant date extortion scam.  Let me tell you an incident.  Last year, a Delhi-based civil service aspirant met Varsha on the dating app Tinder.  After a few days of conversation, they decided to meet in person at Black Mirror Cafe in East Delhi's Vikas Marg area to celebrate her birthday.  After reaching the cafe, they ordered snacks, two cakes, and four non-alcoholic shots.  The "date" was going quite well until Varsha had to rush out, stating there was a family emergency.  As the man finished the food and called for the check, the bill stunned him - he owed the cafe an obscene 1,21,917.70 rupees for food that should not cost more than a few thousand.  The victim promptly disputed the bill, but he was threatened, confined, beaten and forced to pay.  The man ended up transferring the amount online to one of the cafe's owners - 32-year-old Akshay Pahwa.  Afsan, whose f...