Heavens

Two kinds of Webb telescope mirrors arrive at NASA Goddard

It takes two unique types of mirrors working together to see farther back in time and space than ever before, and engineers at NASA's Goddard Space Flight Center have just received one of each type. Primary and Secondary Mirror Engineering Design Units (EDUs) have recently arrived at NASA's Goddard Space Flight Center in Greenbelt, Md. from Northrop Grumman Aerospace Systems in Redondo Beach, Calif. and are undergoing examination and testing. When used on the James Webb Space Telescope those two types of mirrors will allow scientists to make those observations.

Herschel links star formation to sonic booms

ESA's Herschel space observatory has revealed that nearby interstellar clouds contain networks of tangled gaseous filaments. Intriguingly, each filament is approximately the same width, hinting that they may result from interstellar sonic booms throughout our Galaxy.

The filaments are huge, stretching for tens of light years through space and Herschel has shown that newly-born stars are often found in the densest parts of them. One filament imaged by Herschel in the Aquila region contains a cluster of about 100 infant stars.

Celestial fireworks from dying stars

NGC 3582 is part of a large star-forming region in the Milky Way, called RCW 57. It lies close to the central plane of the Milky Way in the southern constellation of Carina (The Keel of Jason's ship, the Argo). John Herschel first saw this complex region of glowing gas and dark dust clouds in 1834, during his stay in South Africa.

Report provides NASA with direction for next 10 years of space research

COLUMBIA, Mo. ¬— During the past 60 years, humans have built rockets, walked on the moon and explored the outer reaches of space with probes and telescopes. During these trips in space, research has been conducted to learn more about life and space. Recently, a group of prominent researchers from across the country published a report through the National Academy of Sciences that is intended as a guide as NASA plans the next 10 years of research in space.

First galaxies were born much earlier than expected

Using the amplifying power of a cosmic gravitational lens, astronomers have discovered a distant galaxy whose stars were born unexpectedly early in cosmic history. This result sheds new light on the formation of the first galaxies, as well as on the early evolution of the Universe.

Space jets in a bottle

By creating space-like conditions in a slim 4m vessel, Italian researchers have helped confirm the behaviour of astrophysical jets – streams of charged particles shot out by supermassive black holes and young stars, which stretch several hundred thousand light years across space.

The streams of initially charged particles – known as astrophysical jets - which can travel close to the speed of light have previously only been understood through computer simulations but are now being brought to life in lab-produced vacuums.

Physicists discover new way to visualize warped space and time

PASADENA, Calif.—When black holes slam into each other, the surrounding space and time surge and undulate like a heaving sea during a storm. This warping of space and time is so complicated that physicists haven't been able to understand the details of what goes on—until now.

"We've found ways to visualize warped space-time like never before," says Kip Thorne, Feynman Professor of Theoretical Physics, Emeritus, at the California Institute of Technology (Caltech).

Newly merged black hole eagerly shreds stars

A galaxy's core is a busy place, crowded with stars swarming around an enormous black hole. When galaxies collide, it gets even messier as the two black holes spiral toward each other, merging to make an even bigger gravitational monster.

NASA's Kepler helps Iowa State's Kawaler, astronomers update census of sun-like stars

AMES, Iowa – NASA's Kepler Mission has detected changes in brightness in 500 sun-like stars, giving astronomers a much better idea about the nature and evolution of the stars.

Prior to Kepler's launch in March 2009, astronomers had identified the changes in brightness, or oscillations, of about 25 stars similar to our sun in size, age, composition and location within the Milky Way galaxy.

Breakthrough study confirms cause of short gamma-ray bursts

WASHINGTON -- A new supercomputer simulation shows the collision of two neutron stars can naturally produce the magnetic structures thought to power the high-speed particle jets associated with short gamma-ray bursts (GRBs). The study provides the most detailed glimpse of the forces driving some of the universe's most energetic explosions.

Deep-space travel could create heart woes for astronauts

Astronauts anticipate more trips to the moon and manned missions to Mars. But exposure to cosmic radiation outside the Earth's magnetic field could be detrimental to their arteries, according to a study by University of Alabama at Birmingham researchers published April 6, 2011, online in the journal Radiation Research.

NASA telescopes join forces to observe unprecedented explosion

WASHINGTON -- NASA's Swift, Hubble Space Telescope and Chandra X-ray Observatory have teamed up to study one of the most puzzling cosmic blasts yet observed. More than a week later, high-energy radiation continues to brighten and fade from its location.

Astronomers say they have never seen anything this bright, long-lasting and variable before. Usually, gamma-ray bursts mark the destruction of a massive star, but flaring emission from these events never lasts more than a few hours.

2 dying stars reborn as 1

The two white dwarfs orbit each other at a distance of 140,000 miles - less than the distance from the Earth to the Moon. They whirl around at speeds of 270 miles per second (1 million miles per hour), completing one orbit in only 39 minutes.

Archaeological whodunit from the hometown of Romeo and Juliet

Three new bright blue pigments with origins in the hometown of Shakespeare's star-crossed lovers Romeo and Juliet have become stars in a drama that is unsettling experts on conservation of archaeological treasures around the world. That's the topic of an article on the solution of an archaeological 'whodunit' involving those new-to-science pigments in the current edition of Chemical & Engineering News (C&EN), ACS' weekly newsmagazine.

Top 40 science questions from US conservation policy makers

(Santa Barbara, Calif.) –– A wide-ranging group of experts has published a set of 40 key environmental questions to help align scientific research agendas with the needs of natural resource decision makers.

The cover story of the April issue of BioScience, written by 30 co-authors, contains the results of a process in which 35 participants solicited and synthesized questions about science relevant to natural resource management. Questions were submitted by 375 individuals who are involved with natural resource policy, management, or study.