There are four planets circling the HR8799, a star 128 light years away from our own planet.
FORBES: Astronomers Conduct 'Reconnaissance' Of Another Solar System
Astronomers are able to detect planets orbiting the lens star if the light from the background star is warped by one or more planets.
And a distant world discovered in February called GJ 667Cc, orbiting a star 22 light years away from Earth, has an ESI value of 0.85, the highest ranking so far of any confirmed potentially habitable planet.
The infra-red light from dust heated by a star has a much longer wavelength ie, is cooler than most of the light from the star itself, so a camera tuned to the right wavelength can pick out a dust disc without being totally blinded by the stellar glare.
Astronomers detected the new planet as it crossed the face of the distant "sun", dimming the star's light as it passed in front.
The technique employed to find the new planet uses the gravitational field of a star like a lens - magnifying the light from a distant background star.
If an object floating through space passes near the line of sight between the earth and a distant star, its gravity should, according to the theory of relativity, bend and focus the light from that star.
Bobby Willis guided Cilla from 1970s variety show hostess to her current position of star of Saturday evening light entertainment.
Not one person in my eye line was sitting as the star sang Ray of Light while playing the guitar and dancing, (is there anything this woman cannot do?).
Miss Leavitt found that the rate depends on the star's total light output (luminous Cepheids pulse more slowly than feeble ones) a discovery that allows them to be used for cosmic surveying.
LONDON, Saturday 23rd March - As the UK prepares to go 'into darkness' for WWF's Earth Hour, Paramount Pictures is pleased to announce its support with a special 'Star Trek' themed light display which will dim as Earth Hour approaches.
ENGADGET: Quadrocopter fleet stuns Londoners with giant hovering Star Trek logo (video)
Unfortunately, less stable pointing means less accurate photometry (the measurement of light from the star).
Apparently you also came up with the idea of the light saber for Star Wars?
Strictly speaking, vortex masks are not the only way to cancel the light from a star.
That, she says, suggests the burst came from a single neutron star just a few hundred light years away.
This was quite a feat as the intense light from the star normally obscures the subtle visual details necessary to distinguish a planet.
My fans are more interested in a photo of me posing with a light saber on Star Wars Day than a fresh link to a developing story out of China.
The JWST will have equipment on it capable of determining the chemistry of the atmospheres of alien worlds based on the how the light of its star changes as it passes through.
So the team finds planets and sunspots by the light produced by the star.
FORBES: Astronomers Discover A Solar System Similar To Our Own
Besides its temperature, the light coming from a star can also tell astronomers a lot about its chemical composition.
The Corot spacecraft detects the oscillations as subtle variations in the light emitted by the star as the surface wobbles.
Local communities supported the bid, with residents in Talybont-on-Usk holding their own Star Party and organising a community light switch off.
To work around this problem, Project 1640 uses a suite of hardware and software that basically cuts out the light from the nearby star.
FORBES: Astronomers Conduct 'Reconnaissance' Of Another Solar System
Using gravitational microlensing, scientists are able to determine when the gravity of a large object alters the light coming from a star on its way to Earth.
Ian Roxburgh, professor of astronomy at Queen Mary, University of London, said the transit method still favoured the detection of big planets, because they blocked out more light from the parent star.
The researchers used the star's X-ray light curves to determine its spin, which makes V1647 one of the youngest stars whose spin has been determined using an X-ray based technique, they said.
In fact, the star is so luminous that researchers will be able to make direct observations of the planet's atmosphere by examining light that shines through it when the star passes within KELT North's field of view again in November.
MSN: Newly discovered alien planet 'resets the bar for weird'
For all I know, Goldman is indeed the Death Star of global capitalism and its executives light their cigars with SEC regulations.
FORBES: Is Goldman Sachs Really The Evil 'Death Star' Of Capitalism?
The researchers suggest the clusters they originated from may no longer be active, thus shedding light on the history of star activity in the galactic core.
Another group of astronomers have come forward to say that they too have made observations of the planet seen orbiting the star HD 209458, which is 150 light-years from Earth.
应用推荐