Geology, News, Science, Space

Rosetta spacecraft finds huge sinkholes on comet’s surface

A catalogue of sinkholes spotted by Rosetta on comet 67P/Churyumov-Gerasimenko.
Image via: forbes.com

Rosetta is a robotic space probe built and launched by the European Space Agency. Along with Philae, its lander module, the craft is performing a detailed study of comet 67P/Churyumov–Gerasimenko. The probe usually orbits 67P at a distance of a few hundred kilometers. Footage received from Rosetta over the last year showed a number of dust jets coming from the comet,

Animals, Biology, Geology

Saber-tooth cats grew their fangs faster than human fingernails

Skeleton of Smilodon (Smilodon fatalis). Exhibit in the National Museum of Nature and Science, Tokyo, Japan.

Saber-tooth cats, the bane of early humans (and pretty much every creature that co-existed with them), roamed the Earth for 42 million years before going extinct at the end of the ice age. Now, a new study has found that their trademark teeth may have evolved later in their evolutionary stage, but when they grew, they grew fast. The saber-tooth cats were

Biology, Geology, News

500 million year old worm had impressive spiky armor

Collinsium ciliosum. Image credit: Jie Yang.

Paleontologists working in China have discovered fossils of an impressively armored worm that lived during the Cambrian, 500 million years ago. Called  Hairy Collins’ Monster, this is one of the first creatures to develop a spiky armor. Today, the 180 species of velvet worms are pretty similar – they have tiny eyes, antennae, multiple pairs of legs, and slime glands. They

Geology, News

Have geologists discovered all the big craters on Earth?

The Meteor Crater is "only" 1 mile across - craters larger than this are becoming increasingly harder to discover... because we may have discovered them all.

Mars has over 250,000 craters created by asteroid impacts, the Moon has millions – too many to count. But the Earth has an atmosphere, which means we’re protected against most threats and we have much to be thankful for. But even the craters that we do have are constantly eroded by wind and water, so finding and identifying them is quite a challenge.

Astronomy, Geology, News

Lakes on Titan might have formed like sinkholes on Earth

Artist impression of Saturn seen from Titan. Image: NASA JPL

Researchers from the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA) have been trying to figure out how Titan’s seas formed – more exactly, how the depressions in which the seas are formed.

Geology, Space

Glass in Martian craters might hold clues to ancient life

An impact glass deposit discovered at the Alga Crater. Credit: NASA/JPL-Caltech/JHUAPL/Univ. of Arizona)

Sampling impact glass from the ancient craters that litter the surface for Mars might prove key to settling a long debate: did Mars ever harbor life? Researchers at NASA believe this is a great lead after the Mars Reconnaissance Orbiter (MRO) currently hovering above the red planet found deposits of glass. These were formed by impacts with large asteroids, whose blast trapped and preserved any matter it came across: dust, soil or any plants or bacteria (if there ever were such things). Cracking open these glass time capsules and peering inside could, thus, be one of the best places to look for.

Geology, News, Science

This is what the largest emerald in North America looks like

largest mineral in north america

The Houston Museum of Natural Science is one of the most impressive in the world, curating rare and indigenous wildlife from Texas, a huge sundial and one of the biggest paleontology halls. As expected in a city with some of the richest geologists in the world, we can also find here a large exhibit of over 750 crystallized mineral specimens and rare gemstones. Among these sits the “crown jewel”, a 1,869-carat natural emerald crystal, the largest ever discovered in North America.

Geology, News

California faces tsunami risk – L.A. specifically threatened

This map shows the California Borderland and its major tectonic features, as well as the locations of earthquakes greater than Magnitude 5.5. The dashed box shows the area of the new study. Large arrows show relative plate motion for the Pacific-North America fault boundary.  Mark Legg

It’s not just the San Andreas fault – a new study published in the Journal of Geophysical Research reports that there are several long faults on the U.S. West coast which can cause significant earthquakes, as well as tsunamis.

Biology, Geology, News

Dinosaurs were warm-blooded, new study finds

Image via Science Daily.

New controversial research concluded that dinosaurs weren’t the cold blooded lizards we tend to see them today – instead, they had much in common with mammals, and were warm blooded.

Biology, Geology, News

Creationist finds Paleocene fossils in his basement, claims they’re 4,500 years old

Darla Zelenitsky, palaeontologist and assistant professor at the University of Calgary, left and Edgar Nernberg, look over some of the fish fossils.

An Alberta citizen discovered a trove of rare fossilized fish while digging up his basement. But Edgar Nernberg isn’t a man who “believes” in science – instead, he claims that the fish are 4,500 years old, from Noah’s flood.