The way distant light is bent around galaxies hints that they should have more mass than can be seen.
The technique uses distant light amplified by the gravity of a massive star or planet to create an astronomical magnifying lens.
Increasing Israeli trade restrictions and Israel's refusal to free any of its thousands of Hamas prisoners dimmed the distant light in Gaza's tunnel.
Because light takes so long to reach the earth from distant galaxies, astronomers were able to study the value of alpha in light from the distant past.
Ten billion light-years distant, Mingus will help shed light on so-called dark energy, the force that appears to be speeding up cosmic expansion.
The Madonna has a pale, heart-shaped face, tiny pert nose, light distant eyes, and small perfect mouths.
This means that a telescope tuned to detect cold spots could see much older clusters than one that is trained only on distant sources of light.
And it would also give us insight into what would be needed to think about even sending a probe to Alpha Centauri some 4.37 light years distant.
Careful studies of the shifted light from distant supernovae were what first demonstrated an acceleration in this expansion of the Universe, leading to the 2011 Nobel prize in physics.
To that end, the 570-megapixel camera will eventually measure up to 300 million galaxies up to 8 billion light years distant, as well as 100, 000 galaxy clusters, and 5, 000 supernovae.
And every tunnel only took her to dozens of other tunnels, some of which went on for miles, and ended in points of light so distant and pale they were like stars in other galaxies.
But it is not just the light from the distant quasar that carries information about the composition of the Universe.
Its gravitational field thus bends and focuses the light from the distant object, making it appear closer than it really is.
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.
For example, other scientists discovered a couple of distant planets many light years away that were about the right size and the right distance from their star.
The vistas are immense, the pure light held in by distant snow-capped mountains.
He realised that some of the off-the-shelf equipment used by serious amateurs is sensitive enough to measure the light drop caused by distant transits.
ECONOMIST: Astronomers may have found their first Saturn lookalike
The near object's gravity bends the light rays from the more distant object and magnifies them like a lens.
Using Keck I, a telescope on a mountain-top in Hawaii, the physicists analysed light emanating from very bright but distant galaxies called quasars.
"Light coming toward us from a distant galaxy is bent by the gravity of a lump of matter in the middle, " explained Catherine Heymans of the University of Edinburgh.
To observe such a distant, faint object, scientists had to collect light through the telescopes over 37 hours, letting more and more light accumulate to see as deep as possible.
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 camera works, the team explained, by bouncing lasers off distant objects, and measuring the time it takes for the light to travel back to the detector.
BBC: Long-distance 3D laser camera unveiled by Edinburgh team
The Nicmos sees even farther than the ACS - to the most distant galaxies yet recorded - because the expanding Universe has stretched their light into the near-infrared portion of the electromagnetic spectrum.
BBC: NEWS | Science/Nature | Hubble sees the faintest galaxies
The upshot is that lightweight materials will be used much more in the light trucks and passenger cars of the not-very-distant future than they are in those of today.
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.
Astronomers using the Hubble Space Telescope have discovered a supernova in the distant galaxy NGC 5806, which is a relatively unremarkable galaxy located about 80 million light years from Earth.
If it was in a distant galaxy, it would have to be travelling at several thousand times the speed of light to move as much as it has.
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.
应用推荐