Tag: Universe
Maximum of the meteorite swarm of Coma Berenicides
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Supernova: what is it?
This artist’s impression shows how the material ejected by the SN 1987a supernova is distributed, based on information provided by the Sinfoni spectrograph. © L. Calçada, ESO A supernova is…
Nebula: what is it?
A nebula is a interstellar cloud of gas and dust. Bright nebulae radiate the light gas that compose them (emission nebula) or reflect the light of stars (reflection nebula), or…
Maximum of the sigma-Hydrides meteorite swarm
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Maximum of the Monocerotid meteorite swarm
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The enigma of stars older than the Universe seems solved
The more massive the stars evolve, and vice versa. The theory which explains this fact also makes it possible to date them, but it led to give an age clearly…
The protective bubble of the Solar System, the heliosphere, would be shaped by the Universe
The heliosphere is that kind of bubble that protects our entire Solar System from cosmic radiation. And for a long time, astronomers have sought to characterize it. Today, they show…
Magellan’s gas stream is 5 times closer to Earth and will collide faster
The Magellanic Current is the name that astronomers give to a huge flow of gas that winds around our Galaxy, the Milky Way. And today, researchers are suggesting that this…
JWST: how the space telescope will unfold in space
After launching from Guyana on December 18, the James-Webb Space Telescope will be sent 1.5 million kilometers from Earth on a month-long trip. The aircraft and its various instruments will…
One in five galaxies in the Universe is believed to be hiding behind cosmic dust
Thanks to increasingly efficient telescopes, we are now able to detect primitive galaxies hitherto barely visible because they are hidden behind a thick curtain of cosmic dust. Scientists estimate that…