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The world’s next great space telescope is falling behind.The James Webb Space Telescope, NASA’s successor to the famed Hubble, is at risk of experiencing significant delays in development, according to a new report from a government agency that audits federal programs.

Webb is an $8.8 billion project two decades in the making. Last September, NASA announced it was delaying the telescope’s launch by at least five months, from October 2018 to between March and June 2019. At the time, NASA officials said the change wasn’t due to any problems with the hardware, but because assembling the telescope’s many complex parts was “taking longer than expected.”

This is a disheartening forecast for many parties, including NASA; Northrop Grumman, the telescope’s main contractor; and the European and Canadian space agencies, contributors to the telescope’s design and construction. There’s no question that the Webb will launch. After 20 years of development and construction, most of the money has already been spent and the hardware rigorously tested. But the road to the launchpad may be bumpier than everyone expected.

The Event Horizon Telescope collaboration, an international team of radio astronomers that has been staring down the throat of a giant black hole for years, on Wednesday published what it called the most intimate portrait yet of the forces that give rise to quasars

The black hole in question is a monster 6.5 billion times as massive as the sun, and lies in the center of an enormous elliptical galaxy, Messier 87, about 55 million light-years away in the constellation Virgo.

Now, seen through the radio equivalent of polarized sunglasses, the M87 black hole appears as a finely whiskered vortex, like the spinning fan blades of a jet engine, pumping matter into the black hole and energy outward into space.

“How We Got to Now” divides technological history into six thematic areas — glass, cold, sound, cleanliness, time and light.

the ones here function more like departure points for sets of skillfully interwoven narratives. To take the example of glass, we begin with a formation of molten silica, probably by a crashing comet, 26 million years ago in the Libyan desert. In due course we move to the glassmakers of Venice in the 13th century. And then things get more interesting. Monks laboring over religious manuscripts find that curved pieces of glass can aid their vision; a few centuries later, spectacles become popular, because parts of the European population, in response to the invention of the printing press, discover they need corrective lenses to read these new things called books. In time come telescopes and microscopes, which bring forth revolutionary ideas about stars and germs. Fiberglass eventually arrives, and soon we figure out how to make fiber optic glass cables, which carry pulses of laser light and zip petabytes of data around the globe.

I particularly like the cultural observations Johnson draws along the way. The invention and refinement of the glassmaking process, for example, also led to the production of high-quality mirrors. This helped painters like Rembrandt create startling works of self-portraiture; also, it coincided with a new generation of writers, Shakespeare included, willing to examine their characters’ interior lives with unprecedented scrutiny. “The mirror helped invent the modern self,” Johnson asserts. What’s more, “it set in motion a reorientation of society that was more subtle, but no less transformative, than the reorientation of our place in the universe that the telescope engendered.”

Kennedy was in Springfield to campaign for Democrats running for House and Senate seats in the 1962 midterm elections. Before delivering a public speech at the Illinois State Fairgrounds, the president paid a private visit to Lincoln’s tomb. On his way to the tomb, an “employee of the Illinois Department of Public Safety” noticed two men along the president’s motorcade route with a rifle.

If Kennedy had been killed or wounded in Springfield, Vice President Lyndon B. Johnson and a core of advisers already leaning toward some type of airstrike or invasion of Cuba probably would have approved such an attack. An assassination attempt on a U.S. president amid an “eyeball to eyeball” confrontation with the Soviet Union would have led many officials to suspect Kremlin involvement. The Soviets had already been caught lying over the missiles in Cuba, and any Soviet denials regarding the attempted assassination of Kennedy would have been seen in the same light.

According to the Secret Service report, the alert public safety official “saw a rifle barrel with telescopic sight protruding from a second-story window. The local police took into custody and delivered to Special Agents of the Secret Service” two men who were brothers-in-law. The Secret Service noted that “a .22 caliber semi-automatic rifle and a full box of .22 long rifle ammunition was seized.” The men admitted “pointing the gun out the window on the parade route. However, they claimed that they had merely been testing the power of the telescopic sight to determine if it would be worthwhile to remove it in order to get a better look at the President when the motorcade returned.

Recorded by the European Space Agency’s Planck satellite, the image is a heat map of the cosmos as it appeared only 370,000 years after the Big Bang, showing space speckled with faint spots from which galaxies would grow over billions of years.

is in stunning agreement with the general view of the universe that has emerged over the past 20 years, of a cosmos dominated by mysterious dark energy that seems to be pushing space apart and the almost-as-mysterious dark matter that is pulling galaxies together. It also shows a universe that seems to have endured an explosive burp known as inflation, which was the dynamite in the Big Bang.

“The extraordinary quality of Planck’s portrait of the infant universe allows us to peel back its layers to the very foundations, revealing that our blueprint of the cosmos is far from complete.”

Astronomers discover 7 Earth-sized planets orbiting nearby star

TRAPPIST-1 barely classifies as a star at half the temperature and a tenth the mass of the sun. It is red, dim and just a bit larger than Jupiter. But these tiny ultracool dwarf stars are common in our galaxy.

Over the next decade, the researchers want to define the atmosphere of each planet, as well as to determine whether they truly do have liquid water on the surface and search for signs of life.

Black hole is 30 times bigger than expected

The galaxy, with the very clunky name of SAGE0536AGN, was discovered with NASA's Spitzer Space Telescope. Scientists think it's about 9 billion years old.

The data indicated the black hole is 30 times larger than expected for this size of galaxy, according to a press release from the Royal Astronomical Society.

Long, long ago, when the universe was only about 100,000 years old — a buzzing, expanding mass of particles and radiation — a strange new energy field switched on. That energy suffused space with a kind of cosmic antigravity, delivering a not-so-gentle boost to the expansion of the universe.Then, after another 100,000 years or so, the new field simply winked off, leaving no trace other than a speeded-up universe.

astronomers from Johns Hopkins University. In a bold and speculative leap into the past, the team has posited the existence of this field to explain an astronomical puzzle: the universe seems to be expanding faster than it should be.

The cosmos is expanding only about 9 percent more quickly than theory prescribes. But this slight-sounding discrepancy has intrigued astronomers, who think it might be revealing something new about the universe.

NASA has decided to send two new missions to Venus, our closest planetary neighbor, making it the first time the agency will go to this scorching hot world in more than three decades.The news has thrilled planetary scientists who have long argued that Venus deserves more attention because it could be a cautionary tale of a pleasant, Earth-like world that somehow went horribly awry.

Venus has been called Earth's "evil twin" because it is about the same size as Earth and probably was created out of similar stuff; it might have even had at one time oceans of liquid water.

But Venus appears to have suffered a runaway greenhouse effect. Temperatures at its surface now exceed 800 degrees Fahrenheit, and its atmosphere is toxic to humans.NASA's new administrator, Bill Nelson, announced that after considering four different proposals for its Discovery Program, including proposed trips to moons of Jupiter and Neptune, the agency went all in on Venus.

NASA is finally going back to Venus, for the first time in more than three decades. And a second time too.On Wednesday, Bill Nelson, the NASA administrator, announced the agency’s latest choices for robotic planetary missions, both expected to head to Venus in the late 2020s: DAVINCI+ and VERITAS.

In the past year, a neglected Venus re-entered the planetary limelight after a team of scientists using Earth-based telescopes claimed they had discovered compelling evidence for microbes living in the clouds of Venus today where temperatures remain comfortably warm instead of scorching.

The other finalists were Io Volcanic Observer, which would have explored Io, a moon of Jupiter that is the most volcanically active body in the solar system, and Trident, which would have sent a spacecraft flying past Triton, an intriguing large moon of Neptune.

The Renaissance was a fervent period of European cultural, artistic, political and economic “rebirth” following the Middle Ages.

Some of the greatest thinkers, authors, statesmen, scientists and artists in human history thrived during this era, while global exploration opened up new lands and cultures to European commerce. T

Also known as the “Dark Ages,” the era is often branded as a time of war, ignorance, famine and pandemics such as the Black Death.

Dark energy was assumed to be a constant force in the universe, both currently and throughout cosmic history. But the new data suggest that it may be more changeable, growing stronger or weaker over time, reversing or even fading away.

. If the work of dark energy were constant over time, it would eventually push all the stars and galaxies so far apart that even atoms could be torn asunder, sapping the universe of all life, light, energy and thought, and condemning it to an everlasting case of the cosmic blahs. Instead, it seems, dark energy is capable of changing course and pointing the cosmos toward a richer future.

a large international collaboration called the Dark Energy Spectroscopic Instrument, or DESI. The group has just begun a five-year effort to create a three-dimensional map of the positions and velocities of 40 million galaxies across 11 billion years of cosmic time. Its initial map, based on the first year of observations, includes just six million galaxies.