There is a new candidate for coldest known star: a brown dwarf with about the same temperature as a hot cup of coffee. That’s cool enough to begin crossing the blurry line between small cold stars and big hot planets.

The post New candidate for “coldest star” is same temperature as a hot cup of coffee appeared first on Smithsonian Insider.

The discovery of a pattern of X-ray “stripes” in the remains of an exploded star may provide the first direct evidence that a cosmic event […]

The post X-ray stripes in exploded star may reveal highest energies of cosmic rays produced in our Galaxy appeared first on Smithsonian Insider.

If intelligent and more advanced civilizations exist on other planets then its a good bet that some of these civilizations turned to asteroid mining long ago. If so, the hallmarks of their mining activities, such as unusual dirty halos of cast-off dust and debris around large asteroids, might be detectable from earth.

The post Evidence of asteroid mining in our galaxy may lead to the discovery of extraterrestrial civilizations appeared first on Smithsonian Insider.

Scientists at the Smithsonian’s National Zoo detected a secondary rise in urinary progesterone levels in the Zoo’s female giant panda Mei Xiang (may-SHONG). This hormone rise indicates that it should be 40 to 50 days before Mei Xiang either gives birth to a cub or comes to the end of a pseudopregnancy, or false pregnancy, which is common in giant pandas.

The post Hormone tests show Mei Xiang, the National Zoo’s female giant panda, may be pregnant appeared first on Smithsonian Insider.

The most widely used methods for calculating species extinction rates are "fundamentally flawed" and overestimate extinction rates by as much as 160 percent, life scientists report May 19 in the journal Nature.

The post Methods for calculating species extinction rates overestimate extinction, says Smithsonian scientist appeared first on Smithsonian Insider.

This new research, which involved both surface and aerial surveys, has revealed an enormous aggregation of whale sharks—the largest ever reported—with up to 420 individuals off the coast of the Yucatán Peninsula in Mexico.

The post Scientists discover the largest assembly of whale sharks ever recorded appeared first on Smithsonian Insider.

Some--birds called wire-tailed manakins, residents of tropical forests in the Americas--are cooperators as well as competitors. They cooperate, forming alliances for a common cause.

The post Manakins, birds of tropical forests, form alliances for common good appeared first on Smithsonian Insider.

This Jupiter-sized world reflects less than one percent of the light that falls on it, making it blacker than any planet or moon in our solar system.

The post Darkest known exoplanet, a Jupiter-sized gas giant, discovered appeared first on Smithsonian Insider.

The Life and Morals of Jesus of Nazareth, more commonly known as the Jefferson bible, is a volume created by Thomas Jefferson containing passages he […]

The post Unlocking the mysteries of Jefferson’s bible with high-tech analysis and microscopic testing appeared first on Smithsonian Insider.

History and geology, not current ecology, are likely what has made tropical forests so variable from site to site.

The post What makes rainforests unique? History, not ecology. appeared first on Smithsonian Insider.

The first DNA barcoding survey of crustaceans living on samples of dead coral taken from the Indian, Pacific and Caribbean oceans suggests that the diversity of organisms living on the world’s coral reefs—one of the most endangered habitats on Earth—is seriously underestimated.

The post New DNA study suggests coral reef biodiversity is seriously underestimated appeared first on Smithsonian Insider.

An excavation at a site in South Africa has unearthed the 190-million-year-old dinosaur nesting site of the prosauropod dinosaur Massospondylus–revealing significant clues about the evolution of complex reproductive behavior in early dinosaurs.

The post 190-million-year-old dinosaur nesting site discovered in South Africa appeared first on Smithsonian Insider.

In fact, researchers have learned, the detached male pedipalps transfer more sperm faster after copulation is ended by the female rather than the male.

The post Male spider’s sexual organs work fastest only when a female breaks them off appeared first on Smithsonian Insider.

A new study of marmosets, small South American monkeys, indicates that obesity may begin very early in life and suggests that marmosets may be a helpful model for obesity in humans.

The post Is obesity predestined at infancy? Marmoset study may help scientists find out. appeared first on Smithsonian Insider.

Paleontologists studying an extreme short-term global warming event have discovered direct evidence about how mammals respond to rising temperatures. In a study that appeared recently […]

The post Evolution of earliest horses driven by climate change appeared first on Smithsonian Insider.

A recent decline in Ovenbirds (Seiurus aurocapilla), a ground-nesting migratory songbird, in forests in the northern Midwest United States is being linked by scientists to a seemingly unlikely culprit: earthworms.

The post Earthworms to blame for decline of Ovenbirds in northern Midwest forests, study reveals appeared first on Smithsonian Insider.

Slithering in at 48 feet long and weighing an estimated one-and-a-half tons, the largest snake the world has ever seen is being brought back to […]

The post Largest snake the world has ever seen is being brought back to life by Smithsonian Channel appeared first on Smithsonian Insider.

The snakes are not only eating the area’s birds, but also the birds’ eggs straight from the nest.

The post Invasive pythons in Florida now stealing bird eggs straight from the nest appeared first on Smithsonian Insider.

When most people look at a forest, they see walking trails, deer yards, or firewood for next winter. But scientists at the Harvard Forest and […]

The post Development will reduce carbon stored in forests, Smithsonian & Harvard scientists predict appeared first on Smithsonian Insider.

Just a few towering white fir, sugar pine and incense cedars per acre at Yosemite National Park are disproportionately responsible for photosynthesis, converting carbon dioxide into plant tissue and sequestering that carbon in the forest, sometimes for centuries,

The post Heavyweight trees are forest champs at sequestering carbon appeared first on Smithsonian Insider.

By attaching tiny radio transmitters to more than 400 seeds, Patrick Jansen, scientist at the Smithsonian Tropical Research Institute and Wageningen University, and his colleagues found that 85 percent of the seeds were buried in caches by agoutis, common, house cat-sized rodents in tropical lowlands.

The post Thieving rodents hiding seeds drives continual rejuvination of tropical forests appeared first on Smithsonian Insider.

Today, astronomers are releasing the highest-resolution images ever taken of the Sun's corona, or million-degree outer atmosphere, in an extreme-ultraviolet wavelength of light.

The post Astronomers release highest-resolution images ever of the Sun’s corona appeared first on Smithsonian Insider.

The Sloan Digital Sky Survey III (SDSS-III) has released the largest three-dimensional map of massive galaxies and distant black holes ever created.

The post Largest ever 3D map of the sky released by astronomers appeared first on Smithsonian Insider.

A rising spike in West Nile virus is taking health officials across the country by surprise as this year more than 2,600 people in 45 states and the District of Columbia, have been stricken with severe symptoms of this mosquito-transmitted disease.

The post As robins disperse, West Nile mosquitoes switch diet to humans: Q&A with Smithsonian ornithologist Peter Marra appeared first on Smithsonian Insider.

What scientists found was that the domestic turkey that ends up on the dinner table exhibits less genetic variation than its ancestral wild counterparts, which were first domesticated in 800 B.C..

The post Today’s domestic turkeys are genetically distinct from wild ancestors appeared first on Smithsonian Insider.

Smithsonian Conservation Biology Institute scientists and collaborators have found that the island scrub-jay’s population on Santa Cruz Island—its only habitat—is significantly smaller than previously believed […]

The post New count reveals scrub-jay on Santa Cruz Island is among rarest bird species in the U.S. appeared first on Smithsonian Insider.

Forget the deep forest, “today the highest densities of deer in the state of Virginia are in suburbia,” says William McShea, ecologist and research scientist at the Smithsonian’s Conservation Biology Institute in Front Royal, Va.

The post Browsing suburbia: Virginia’s parceled-up farms and forests are ideal refuge for white-tailed deer appeared first on Smithsonian Insider.

Even dying stars could host planets with life – and if such life exists, we might be able to detect it within the next decade. […]

The post New evidence of extraterrestrial life may come from dying stars appeared first on Smithsonian Insider.

Among vertebrates few animals rival poison dart frogs for their vibrant electric blue, yellow, red and orange skin colors. Some experts have long believed these […]

The post Poison dart frog toxins best suited for deterring biting arthropods, research reveals appeared first on Smithsonian Insider.

A century from now researchers will gather data from a forest in Maryland to see how, during the previous 100 years, varying levels of species […]

The post Smithsonian scientists launch 100-year project to examine the future of forests appeared first on Smithsonian Insider.

Douglas Owsley, the division head for physical anthropology at the Smithsonian’s National Museum of Natural History, presented today a forensic analysis of 17th-century human remains […]

The post Forensic analysis of 17th-century human remains at Jamestown, Va., reveals evidence of survival cannibalism appeared first on Smithsonian Insider.

There is little doubt that human activity is affecting planet Earth, but just how much? And is it all negative? Rick Potts is the director […]

The post Smithsonian anthropologist Rick Potts answers questions about the Anthropocene appeared first on Smithsonian Insider.

If you had a time machine that could take you anywhere in the past, what time would you choose? Most people would probably pick the […]

The post Young star suggests our sun was a feisty toddler appeared first on Smithsonian Insider.

The Smithsonian is delighted to be included in this year’s Aspen Ideas Festival (June 26 – July 2 in Aspen, Colo.) which will gather some of […]

The post Three Smithsonian scientists to participate in Aspen Ideas Festival appeared first on Smithsonian Insider.

As economic expansion and development fragments the forest landscape of central India, the species that rely on that habitat—including endangered tigers and leopards—face dwindling populations […]

The post Forest corridors essential to gene flow in India’s leopard and tiger populations appeared first on Smithsonian Insider.

Astronomers are constantly on the hunt for ever-colder star-like bodies, and two years ago a new class of objects was discovered by researchers using NASA’s […]

The post Coldest brown dwarfs blur lines between stars and planets appeared first on Smithsonian Insider.

Grow fast, die young is not a lifestyle normally associated with trees. But in the forests of the Northeastern United States the red maple follows […]

The post Effects of human impact are long lasting for forests in Northeast U.S. appeared first on Smithsonian Insider.

Hungry rodents that wake up early are much more likely to be eaten than rodents getting plenty of food and shut-eye, according to new results […]

The post Rain forest rodents risk their lives to eat appeared first on Smithsonian Insider.

Paddling the remote oxbow lakes and bayous of the White River National Wildlife Refuge in Arkansas, the team of scientists was seeking proof of a […]

The post Nest discovery turns back the clock to days of Daniel Boone and Colonial America appeared first on Smithsonian Insider.

Termites and ants are not something you’re likely to pour into a cereal bowl for breakfast or munch with toast and tea, but your ancient […]

The post Termites for breakfast? Your ancestors might have! appeared first on Smithsonian Insider.

Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun […]

The post Transiting exoplanet with longest known year appeared first on Smithsonian Insider.

The Smithsonian Conservation Biology Institute and the SVF Foundation have launched a new collaboration to strengthen rare and endangered livestock breed conservation through the preservation […]

The post Smithsonian & SVF launch rare-breed livestock conservation partnership appeared first on Smithsonian Insider.

Among the bats, rats and other ferocious animals that lie within the storage drawers of the mammal collection in the Smithsonian’s National Museum of Natural […]

The post The world’s scariest rabbit lurks within the Smithsonian’s collection appeared first on Smithsonian Insider.

A few images of comet 67P/Churyumov-Gerasimenko just sent back by the European spaceship Rosetta appear to be a snowboarder’s dream: pristine slopes covered in powder. […]

The post Comet probe set to answer ancient question of life on earth appeared first on Smithsonian Insider.

A new DNA study of ancient corn kernels and cobs from archaeological sites across North America has settled a long debate as to exactly where […]

The post Corn entered Southwest U.S. first along highland route, DNA shows appeared first on Smithsonian Insider.

A bird’s nest is a small bowl-shaped collection of twigs and straw built on a tree branch. Right? Well…maybe. As Chris Milensky, museum specialist in […]

The post Bird nests: Variety is Key for the world’s avian Architects appeared first on Smithsonian Insider.

  In the store-rooms of the National Museum of American History curators recently discovered a small microscope made around 1750 by John Cuff (1708-1772), a […]

The post The oldest microscope in the museum appeared first on Smithsonian Insider.

The Inka Empire is one of the greatest civilizations in the Western Hemisphere, spanning from the 13th century until the Spanish invasion in 1532. To […]

The post 5 Reasons the Inka Road is one of the Greatest Achievements in Engineering appeared first on Smithsonian Insider.

Within the 1608 church where Pocahontas and John Rolfe married, the skeletal remains of four early settlers were uncovered during a 2013 archaeological dig at […]

The post Jamestown skeletons identified as colony leaders appeared first on Smithsonian Insider.

Skygazers at northern latitudes are familiar with the W-shaped star pattern of Cassiopeia the Queen. This circumpolar constellation is visible year-round near the North Star. […]

The post CASSIOPEIA’S HIDDEN GEM: THE CLOSEST ROCKY, TRANSITING PLANET appeared first on Smithsonian Insider.