With their billions of stars, why don’t these giant structures light up the entirety of space?

With their billions of stars, why don’t these giant structures light up the entirety of space?
In this hypothetic question, what happens to your shadow when sprinting at inhuman speeds?
What would happen if a wave of a magic wand put all the stars together in the night sky?
Gamma rays are known to be produced by some of the most energetic objects in the universe, including supernova explosions, pulsars and around black holes
The very first particles of light came from somewhere. We find out where
Ancient light from the distant structures can tell us more about the early universe
NASA’s space telescope has found that the black hole ate its last big meal about 6 million years ago
“Just in time for Valentine’s Day, we have discovered the first example of a planet that seems to be causing a heartbeat-like behaviour in its host star”
The tiny structures could reveal important details about a productive period of star formation in the cosmos billions of years ago
The discovery marks the first important step for observational studies of extragalactic hot molecular cores and challenges the hidden chemical diversity of our universe
Using six or more years of data from NASA’s Fermi Gamma-ray Space Telescope, the search for the elusive material has been broadened with some novel approaches
The craft has made it to the planet’s magnetosphere, where the movement of particles in space is controlled by what’s going on inside the gas giant
A way of estimating more accurate distances to the thousands of planetary nebulae dispersed across our galaxy has been announced by a team of three astronomers
The strange behaviour of black holes has become somewhat less mysterious recently, according to NASA’s Swift spacecraft and NuSTAR satellite
Prisms are crucial for a good pair of binoculars. We find out why
An extremely hot and very big class of exoplanet, here’s some facts about hot Jupiters
We take a look at why astronomers are keen for the launch of the starshade
We take a look at when the best time is to see this strange phenomenon
Learn about the incredible properties of light in Cosmos: A Space Time Odyssey
Learn more about the time machines that exist on Earth with Cosmos: A Space Time Odyssey