Earth is still the only planet we know where water can exist in liquid form on the surface and the water is vital for all known forms of life. Rain brings life: it is a major component of the water cycle (also known as the hydrologic cycle, the continuous movement of water on, above and below the surface of the Earth) and is responsible for depositing most of the fresh water on the Earth. Here are the top ten wettest places on Earth.
Continue reading Top 10 Wettest Places on Earth
Earth is a blue marble in the space: the water, gives our planet its blue color: about 71 percent of the Earth’s surface is water-covered. There is roughly 326 million cubic miles (1.332 billion cubic kilometers) water on the Earth’s surface. Almost 97% of that water is salty (ocean water). But where all that water came from?
Continue reading Where Earth’s water came from?
As of May 26, 2016, Emma Morano, a 116-Year-Old woman from Italy is the oldest living human in the world (currently the oldest living man is Yisrael Kristal, who is 113, an Auschwitz Survivor now Living in Israel).
Update: Emma Morano has died on April 15, 2017, at the age of 117 years and 137 days.
Continue reading Emma Morano, The Oldest Living Human
Four Nile crocodiles have been found in Florida by scientists from the University of Florida. Between 2002 and 2004, the researchers have studied populations of crocodiles in the state. Previously, using DNA analysis, they found three Nile crocs: one was a foot long hatchling sitting on a porch in Miami. Another was found on the property of a private zoo in Homestead, and a third, also in Homestead, a 10-pound (4.5 kg) female, was captured in a public park.
Continue reading Nile Crocodiles Have Been Found in Florida
Finally, more recently, in March 2012, a three-foot-long (1 meter) female was trapped in a canal in Homestead. The researchers tagged this one and released her to nature. Two years later, it recaptured and the team calculated its growth rate (40.5 cm/year – 15.95 inches/year) and movement. “The most likely route of travel by waterway (i.e., canal) illustrates that this animal traveled at least 29 km (18 miles) from its original capture site.”
After the extinction of the dinosaurs, approximately 66 million years ago, the rise of mammals begun. There were mammals on earth before that date, but after the Cretaceous–Paleogene (K–Pg) extinction event (a mass extinction of some three-quarters of the plant and animal species on Earth, including all non-avian dinosaurs), mammals took over the medium- to large-sized ecological niches. Some of these mammals reached enormous sizes, and usually, they were larger than today’s counterparts (with the exception of whales). Here are some of the largest prehistoric mammals ever known.
Continue reading Largest prehistoric mammals
On November 6th, 2015, UP Aerospace Inc. launched the 20-foot (6-meters) tall SL-10 rocket (a small sounding rocket) into near-space. The mission was to deploy the Maraia Capsule testing the aerodynamics and stability of the payload on re-entry to the atmosphere. The rocket reached an altitude of 396,000 feet (120,700 meters) and speeds up to Mach 5.5 (3800 mph or 6115 km/h) at engine burnout. The event was recorded with an attached GoPro. The action camera has recorded amazing images of Earth and space.
Continue reading GoPro footage of a rocket launching into space
On March 17, 1941, John W. Campbell, editor of Astounding Science Fiction, asked Isaac Asimov that: “What, if people see the stars once in a thousand of years?” Campbell has had read Ralph Waldo Emerson’s 1836 essay “Nature” and Emerson was saying in the first chapter that “If the stars should appear one night in a thousand years, how would men believe and adore, and preserve for many generations the remembrance of the city of God!”
Continue reading Planet with Three Suns
Campbell wanted Asimov to read that quote, and asked him the question above, “What if people see the stars once in a thousand of years?” Asimov said, “I don’t know…” Campbell said: “I think men would go mad.” And he added: “Now, go and write a story about that.”
We evolved here on Earth, and for thousands of years, we just thought the Earth is also the universe, or at least the most important and the biggest part of it. Our brains have been adapted to the life on Earth and the basic survival needs. So we can deal with the moderately sized objects which have moderate velocity, we can understand the small numbers like 1, 2, 50, we can conceptualize the small distances like two kilometers or the distance from our “cave” to the nearest river. But when the numbers and distances get bigger, I mean much bigger, like the distance from Earth to the Sun, it becomes incredibly difficult to conceptualize.
Continue reading A Scale Model of Solar System Drawn in the Desert and the Result is Stunning
Previously I posted an article titled “If The Moon Were Only 1 Pixel – A Tediously Accurate Map Of The Solar System“. Since the human brain cannot deal with the really large numbers, it is an amazing way to understand how big actually our Solar System is.
April 8, 2016, was a historical day which marks a new milestone on humanity’s space adventure: after delivering CRS-8 cargo on its way to the International Space Station, SpaceX Falcon 9 Flight 23, the third flight of the full-thrust version landed vertically on the drone ship Of Course I Still Love You over the Atlantic ocean, 300 km from the Florida coastline, achieving a long-sought-after milestone for the SpaceX reusability development program.
Here are the videos of that historical moment:
Continue reading SpaceX Falcon 9 lands on a barge (and the Science Fiction saw the future again!)
On August 6, 1945, during the World War II, an American Boeing B-29 Superfortress bomber named “Enola Gay” dropped the world’s first deployed atomic bomb codenamed “Little Boy” over the Japanese city of Hiroshima. The bomb exploded with 15 kilotons of TNT (63 TJ) of energy and caused horrendous destruction to the city. Approximately 66,000 people were killed as a direct result of the blast, and 69,000 were injured to varying degrees. Within four months, the number of the fatalities would reach 90,000–146,000 people due to the acute effects of the atomic bomb.
Continue reading What if a nuclear bomb hit your city?