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Dans Night sky
The night sky tested by our eyes
As astronomy enthusiasts, we take great pleasure in gazing up at the sky on clear nights to admire the beauty of the universe. We observe a multitude of luminous points, varying in distance, size, and hue, along with diffuse bright spots and, under ideal conditions, even streaks of color. But what exactly are we seeing? How much of the universe is truly revealed to us? When we believe that the universe is accessible to us through our naked eyes alone, we are quite mistaken.
Let’s put things into perspective.
Allow me to guide you on a journey through our night sky. Let’s start with the closest celestial objects.
Dans Galaxy
JADES GS-z14-0: the universe's most distant galaxy ever observed
Above is the image of the most distant galaxy ever observed to date. This galaxy, JADES GS-z14-0, is one of the discoveries made as part of the JADES (JWST Advanced Deep Extragalactic Survev) program, a scientific collaboration that uses the James Webb telescope to observe the distant universe, and in particular the first galaxies formed after the Big Bang.
Dans Dark matter
The existence of dark matter in the universe has been a well-established theory since the second half of the 20th century, and one that has won over the vast majority of the scientific community.
Dans northern lights
Observed across most of the northern hemisphere on the night of May 10-11, these northern lights are the result of an exceptionally powerful solar storm.
Dans Stars
Epsilon Orionis is a star in the Orion constellation. It's traditional name is "Alnilam" which means "rand of pearls" in Arabic. It is the 30th brightest star in the sky, and the 4th in Orion. It is classified as a "blue-white supergiant" and is located in the centre of Orion's belt.