Is there anybody out there?
Hubble spots atmosphere on planet 150 light years away.
Astronomers have glimpsed the atmosphere of a planet in a solar system other than our own for the first time. The feat is a first step towards detecting planets capable of supporting life elsewhere in the Universe.
David Charbonneau, of the California Institute of Technology, Pasadena, and colleagues, pointed the Hubble space telescope at the planet, which lies 150 light years away in the constellation Pegasus. Of the 74 extrasolar planets discovered so far, this is the only one whose orbit passes between its star and the Earth, allowing the researchers to catch the signs of starlight shining through its atmosphere.
Each element and compound in the planet’s atmosphere absorbs and scatters starlight of a tell-tale colour. The researchers fine-tuned Hubble to hunt for the signature of sodium, because this element gives a particularly strong signal: "a little goes a really long way," says Charbonneau.
In fact, they saw less sodium in the atmosphere than theoretical models had predicted, perhaps, suspects Charbonneau, because clouds in the planet’s atmosphere blot out some of the starlight.
Next, the team hopes to find potassium, methane and water vapour. While the planet is almost certainly too hot and reactive to contain any of the oxygen that would be the give-away of a potentially inhabited world, Charbonneau isn’t discouraged. The discovery of Earth-like planets is "much closer than most people imagine," he says.
Two space telescopes currently on the drawing board - NASA’s Kepler and the European Space Agency’s Eddington, should have the power to find Earth-sized planets orbiting distant stars at more hospitable distances, and analyse their atmospheres. Kepler could be finding worlds like our own by 2010.
JOHN WHITFIELD | © Nature News Service
Further Improvement of Qubit Lifetime for Quantum Computers
09.12.2016 | Forschungszentrum Jülich
Electron highway inside crystal
09.12.2016 | Julius-Maximilians-Universität Würzburg
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
09.12.2016 | Life Sciences
09.12.2016 | Ecology, The Environment and Conservation
09.12.2016 | Health and Medicine