In 240 BC, the Greek astronomer, geographer, mathematician, music theorist and librarian Eratosthenes of Cyrene (c. 276 BC – c. 195/194 BC) calculated the circumference of the Earth without leaving Egypt. Here’s how:
Continue reading How Eratosthenes calculated the Earth’s circumference
A beautiful video, once again, from Michael Stevens, titled “How Earth Moves”. Michael explains many concepts, including “sub-solar point”, “sidereal day vs solar day”, or “how Earth moves in the space” etc, and he is doing it in a very simplified manner. Enjoy!
Continue reading How Earth Moves (Video)
Some natural events are so rare, so strange, but amazingly beautiful at the same time. They even seem like out of our world, and sometimes it’s hard to believe they truly exist. Here are a few of them, eight stunning and rare natural phenomena.
Continue reading 8 Amazing and Rare Natural Phenomena
We sometimes forget how amazing and interesting place is where we live in. Here are the amazing facts about our planet, Earth. Some of them even may sound fake but in fact they are totally true.
Continue reading 35 Amazing Facts About Earth
In 2006, Planet Earth, the British television series produced by the BBC Natural History Unit “has changed our view of the world”. It was the first nature documentary series filmed in high definition. It took five years in the making and it was the most expensive nature documentary series ever commissioned by the BBC. Now, ten years later, in February 2016, the BBC announced a six-part sequel had been commissioned, titled Planet Earth II. On October 2016, BBC released the new series’ trailer.
Continue reading Planet Earth II Official Extended Trailer
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 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
Alex Kuzoian and Jessica Orwig of Business Insider has prepared a video titled “Here’s why Elon Musk wants to colonize Mars”. In the video, we see some reasons why we should colonize Mars someday.
Continue reading Why we should colonize Mars (and other planets and the satellites too)
We are living on a tiny life-bearing rock, an oasis, in a large, very large and hostile desert called “Universe”. The universe is big, really big, in fact even our solar system is shockingly large compared to Earth. But again, our brains have problems dealing with the big numbers and the large objects.
Jacqui Frank of Business Insider has prepared video comparing our planet with large objects (and distances) in the Universe. These amazing to-scale visuals will help to recognize how small (and fragile) our planet is.
Continue reading Pale Blue Dot vol. 2 – The Tiny Earth
The title describes itself. Artist and designer Josh Worth has created a great web page which is actually a scaled model of our solar system. He scaled the Moon to only one pixel (the radius of the Moon is 1,737 km / 1079.322 mi) and put the planets and other objects like the Kuiper Belt accordingly.
Continue reading If the Moon Were Only 1 Pixel – A tediously accurate map of the Solar System
Our planet is getting warmer every year, and the horrible fact is, the global warming is accelerating. As a natural result, the glaciers are melting at an increasing speed.
Almost 10% of the world’s land surface is currently covered with glaciers, mostly in places like Greenland and Antarctica. The amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth (332,500,000 cubic miles, or 1,386,000,000 cubic kilometers), but the majority of total freshwater on Earth, about 68.7%, is held in ice caps and glaciers. And if all land ice melted the seas would rise about 70 meters (about 230 feet).
What if all these ice melted? What would Earth look like? Alex Kuzoian of Business Insider prepared a video showing the effects of the global melting, and if it happens, “this would dramatically reshape the continents and drown many of the world’s major cities.”
Continue reading What Earth would look like if all the ice melted