1 billion light-years
ago and last year a California team using Hubble said they saw a galaxy from 13.
separating the Sun from its nearest stellar neighbor, the triple star Alpha Centauri.
The new portrait, a mosaic of 520 razor-sharp Hubble images supplemented by ground-based observations, includes some 3,000 stars packed into a region 13 light-years
However, it's often important in modern astrophysics to know the light-crossing time of a given distance--and if the distance is given in light-years
, there you are.
Interestingly, Markarian 509 in Aquarius is much closer at 490 million light-years
and shines at magnitude 13.
html) photo taken by the Hubble Space Telescope shows the nebula, which is more than 7,000 light-years
away and hangs out in the constellation Cassiopeia.
An obscure 15th-magnitude galaxy in Draco known as the Tadpole is a gravitationally disrupted spiral with a debris tail stretching 280,000 light-years
from its core.
The astronomers gazed at stars 153 light-years
(895,000 billion miles) from earth.
A star so turbulent that its eruptions would spread a cloud of gases spanning four light-years
, the distance from the sun to the nearest star.
With our current technologies, we now have the ability to optically view images within a range of a few inches to light-years
Recent estimates, using a wide variety of 'standard candles,' range from just under 40 million light-years
to somewhat over 70 million.
A resident of the constellation Leo, the newly discovered galaxy called Leo T is only about 600 light-years
across--about one-sixteenth the diameter of the Milky Way--and 50,000 times brighter than the sun.
The newly detected supernova is 440 million light-years
from Earth, and it appears in the sky in the constellation Aries.
The newly discovered plume of antimatter rises some 3,500 light-years
above the disk of Earth's galaxy, which is about 100,000 light-years
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