Guinea-Bissau - 2017 Supersonic Aircraft - Souvenir Sheet - GB17

The NASA/ESA Hubble Space Telescope has taken a picture of the galaxy pair IC 4271, which is found in the constellation of Canes Venatici. This Hubble image shows IC 4271, a pair of superimposed spiral galaxies some 800 million light-years away in the constellation of Canes Venatici. Image credit: NASA / ESA / B. Holwerda, University of Louisville Research Foundation, Inc. / G. Kober, NASA’s Goddard...

On March 26, 2022, the ESA/NASA Solar Orbiter spacecraft made the first of its close perihelion passages. The spacecraft flew closer to the Sun than the inner planet Mercury, achieving its closest approach at just 32% of the Earth’s distance from our star. Being that close to the Sun, the images, movies and data returned were spectacular. They show powerful flares, breathtaking views across the...

Intact artifacts and features found at the Powars II site, a red ocher (also known as hematite) quarry located in the foothills of the southern Rocky Mountains in Wyoming, demonstrate unequivocal evidence for red ocher quarrying by Paleoindians beginning 12,840 to 12,505 years ago, thus establishing Powars II as the oldest red ocher quarry identified in the Americas. Pelton et al. present results...

With a 11 to 12-m wingspan, Quetzalcoatlus is the largest flying organism ever known and one of the most familiar pterosaurs to the public. First discovered in 1971, this pterosaur was thought to have flown over land using updrafts like condors and eagles. Conversely, Pelagornis sandersi (7 m wingspan), one of the largest extinct volant birds, was thought to have flown using dynamic soaring like...Guitar Hero Guitar Wireless Controller PS2 only

In a study published in the journal Frontiers in Ecology and Evolution, a team of scientists in South Africa assessed the effects of air temperature and drought on the breeding output of southern yellow-billed hornbills (Tockus leucomelas) in the Kalahari Desert. The southern yellow-billed hornbill (Tockus leucomelas), adult female, in Mapungubwe National Park, South Africa. Image credit: Derek Keats...

In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics. These partons subsequently emit further partons in a process that can be described as a parton shower, which culminates in the formation of detectable hadrons....

Daily cranberry supplementation (equivalent to 1 small cup of cranberries) over a 12-week period improves episodic memory performance and neural functioning, according to a study published in the journal Frontiers in Nutrition. Sustained intake of cranberry over a 12-week period produced significant improvements in memory and neural function in older adults who were cognitively healthy. Image credit:...

Cultivated oat (Avena sativa) is an allohexaploid crop thought to have been domesticated more than 3,000 years ago while growing as a weed in wheat, emmer and barley fields in Anatolia. Oat has a low carbon footprint, substantial health benefits and the potential to replace animal-based food products. However, the lack of a fully annotated reference genome has hampered efforts to deconvolute its...

Using neutron and X-ray tomography, a team of planetary researchers from Lund University and elsewhere examined a section of Miller Range (MIL) 03346, a nakhlite meteorite from Miller Range in Antarctica. A polished section of the Martian meteorite Miller Range (MIL) 03346: (A) photograph of the interior of MIL 03346,230; note the yellow tint in the left region of the sample, marked by dotted lines;...

In a study published in the journal Frontiers in Ecology and Evolution, a team of scientists in South Africa assessed the effects of air temperature and drought on the breeding output of southern yellow-billed hornbills (Tockus leucomelas) in the Kalahari Desert. The southern yellow-billed hornbill (Tockus leucomelas), adult female, in Mapungubwe National Park, South Africa. Image credit: Derek Keats...