Science

A team of scientists at Tel Aviv University, Israel, has 3D-printed the first vascularized engineered heart using a human patient’s own cells and biological materials. Concept schematic: an omentum tissue is extracted from the patient and while the cells are separated from the matrix, the latter is processed into a …

An international team of paleontologists from China and the United States has found high levels of mercury in the end-Permian marine sediments at nearly a dozen sites around the world, which provides persuasive evidence that volcanic eruptions were to blame for the mass extinction at the end of the Permian …

Dr. Steven May, a paleontology research associate at the University of Texas at Austin, has studied and identified an extensive collection of fossils from dig sites near Beeville, Texas. The results appear in the journal Palaeontologia Electronica. An artist’s interpretation of ancient North American fauna. The new study revealed that …

  We tend to think of the moon as an airless wasteland, and that’s mostly true. The moon actually has a tenuous envelope of water and hydroxyl (OH) molecules. NASA launched the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission in 2013 to study the wispy gas around the moon. …

  NASA’s Kepler space telescope has ended its planet spotting mission, but the agency’s Transiting Exoplanet Survey Satellite (TESS) has already picked up the torch. TESS has detected a new exoplanet called HD 21749c. This is not the first planet to show up in TESS data, but it is the …

Planetary researchers have long known that Earth and Mercury have metallic cores. Mercury’s core fills nearly 85% of the volume of the planet — huge compared to the other rocky planets in the Solar System. Like Earth, Mercury’s outer core is composed of liquid metal, but there have only been …

Between 2014 and 2016, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) camera onboard ESA’s Rosetta spacecraft captured almost 70,000 images of comet 67P/Churyumov-Gerasimenko. Now the OSIRIS team has put all of these images online on a dedicated website — the OSIRIS Image Viewer. These 210 images reflect Rosetta’s …

Paleontologists in Mongolia have discovered a new species of hadrosauroid dinosaur that roamed what is now the Gobi Desert approximately 90 million years ago. Skull and mandible of Gobihadros mongoliensis in left lateral (A), dorsal (B), ventral (C), and posterior (D) views. Abbreviations: an – angular, ar – articular, at …

  There were no galaxies, stars, or even molecules in the eons following the Big Bang. There were, however, plenty of atoms. With an entire universe of mass in atomic form, it was only a matter of time until the first molecules formed. Scientists have long suspected that helium hydride …

  The Israeli Beresheet moon lander didn’t complete its mission, crashing into the moon instead of landing softly. That’s a setback for Israel’s space ambitions, but the mission might not be a complete loss. An experimental NASA payload from the Beresheet spacecraft might still be intact someplace on the lunar …