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Earth

The wind, the sand and the water: a new explanation for the phenomenon of sand dunes on Earth and Mars

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Gallons = small waves. A new international study led by Ben-Gurion University has challenged the prevailing theory that different physical conditions allow the development of galleons that do not exist on Earth
The Homo erectus tribe participates in the hunt. Illustration: depositphotos.com

Continuing the Tracing of Human Descent: The Impact of Climate on Out-of-Africa Migration

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Sediment studies in the Mediterranean reveal the existence of a green corridor in the Sahara desert that emerged at the exact time when our ancestors migrated from Africa about 2.1 million years ago
Aliens are listening for signals from Earth. Illustration: depositphotos.com

Can aliens discover us? New research explains

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What could aliens pick up from the radio leak from Earth? How would Earth look to an alien civilization light years away from us?
Ants build a bridge by working together. Illustration: depositphotos.com

Is the Earth on its way to becoming an intelligent organism?

At the beginning of the year 2022, three astrobiologists ran a fascinating thought experiment: they claimed that the entire Earth was about to become an intelligent organism. The meaning, as you can understand, is not that there is a mind at the core of the planet that makes decisions for the creatures living on it. Exactly the opposite: in the future they describe, all living beings on earth will participate together in a process that amounts to the creation of one collective intelligence
Chihalion, Scotland. The first mountain to be measured and for which a topographical map was drawn. Photographer: Andrew2606, Wikimedia

Things that donors know: how did they weigh the earth and what are we doing to it?

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The Earth and the Moon are being bombarded by asteroids at an increased rate. Illustration: shutterstock

The Earth and Moon have had many more asteroid impacts since the age of the dinosaurs

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Birth Pool: Life on Earth may have originated in places similar to the Great Prism Spring in Yellowstone Park, USA. Photo: Jim Peaco, National Park Service.

Life on Earth originated in volcanic hot springs, not the sea, new evidence suggests

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DSCOVR's Earth Color Imaging Camera (EPIC) will capture images similar to this one from Lagrange Point 1, about a million miles from Earth. Credit: NASA / Katie Marsman.

NASA is looking forward to the solar eclipse to help understand the Earth's energy system

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Loud and boisterous

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In order to survive for millions of years, humanity must find ways to protect the Earth. Source: Don Davis.

Questions for the future of humanity: Can the human race avoid extinction?

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3-4 billion years ago, the pH level of the ocean was between 6.0 and 7.5 - something between cow's milk and human blood. Source: pixabay.com.

In the beginning the sea was acidic

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Imprint "Lamelech" on the handle of a pitcher from Ramat Rachel. Photo: Oded Lifshitz.

Scientists: The weakening of the Earth's magnetic field is not a new phenomenon

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The blocks of concrete in New York City will also be preserved and affect the geology of the earth. Photo: Chris Chabot.

Questions for the future of humanity: What geological imprint will we leave behind?

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"Green rust" (left), which was produced in Halevi's laboratory under conditions similar to those that existed in the oceans from the Precambrian period. Electron micrographs (right) show thin, hexagonal-shaped plaques characteristic of "green rust." Source: Weizmann Institute magazine.

The mystery of the green rust

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The average global warming of 2012 - 2016. Source: NASA.

NASA: 2016 was the hottest year since measurements began

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One of the 60 micrometeorites found in a 2.7 billion year old limestone from the Pilbara region of Western Australia. These micrometeorites are composed of iron oxides formed when meteoric iron dust particles oxidized as they traversed Earth's atmosphere, revealing that the upper atmosphere was surprisingly rich in oxygen.Credit: Andrew Tomkins

Cosmic dust has revealed Earth's ancient atmosphere

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Comparing the size of Earth and Mars on the same scale. Image: NASA

Why is Earth bigger than Mars?

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The far side of the Moon overlaps the Earth. The image shows the far side of the Moon, illuminated by the Sun, as it crosses between the DSCOVR spacecraft and Earth and between both and the Sun. Photo: NASA/NOAA

NASA photographed the far side of the moon completely illuminated and hiding the Earth

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North America is illuminated by the moonlight and the cities in a photo from space. Photo: shutterstock

Earth live in high resolution from space (video)

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life in the universe Illustration: shutterstock

Earth will only be habitable for another 1.75 billion years

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Seasons. Photo: shutterstock

Why do the seasons change on Earth?

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Earth as seen from Gemini-11's high orbit in 1966. This is what the crew's view might have looked like just before the engine started to take them on a triple close pass mission. Credit: NASA

NASA's Manned Voyage to the Inner Planets - Article by Amy Shira Teitel

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The blue marble - this time the eastern hemisphere. Taken in January 2012 from the Sumi-NPP spacecraft. Photo: NASA and NOAA

The Blue Marble - 2012 version

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A nugget of raw gold from Venezuela. From Wikipedia

The gold came to us from the sky in meteorites

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The earth in the four seasons in the northern latitudes in relation to the sun. Public domain illustration, from Wikipedia

The summer solstice - a short lesson in astronomy

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