The greatest discoveries of the James Webb Space Telescope
The top 3 according to 46 votes from people: Early supermassive black holes · The Hubble tension confirmed · The "little red dots". (Updated Feb 2, 2025.)
Galaxies too bright for cosmic dawn, giant black holes far too early, the mysterious "little red dots", carbon dioxide in an exoplanet's atmosphere: what Webb has taught us since 2022. Which one fascinates you most?
Automatically translated (original in Français). See the original
Top 13
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1
Early supermassive black holes
Billions of solar masses just 800 million years after the Big Bang.
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2
The Hubble tension confirmed
Webb confirms a Hubble constant of about 73 km/s/Mpc.
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3
The "little red dots"
Mysterious compact red objects in the young Universe.
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4
Bright galaxies at cosmic dawn
Massive, luminous galaxies less than 500 million years after the Big Bang.
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5
JADES-GS-z14-0
One of the most distant galaxies ever observed.
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6
Dust in the young Universe
Carbon-rich dust in a galaxy barely a billion years old.
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7
Cassiopeia A
A supernova remnant that explains where cosmic dust comes from.
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8
The JuMBOs of Orion
At least 40 free-floating pairs of Jupiter-sized objects.
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9
The CO2 of WASP-39 b
The first carbon dioxide clearly detected on an exoplanet.
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10
The rings of the Ring Nebula
Ten concentric arcs beyond the main ring.
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11
Protoplanetary discs
Three dust belts around Fomalhaut and water vapour around PDS 70.
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12
The Pillars of Creation
Thousands of hidden stars in the Eagle Nebula.
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13
The atmosphere of K2-18 b
Methane and carbon dioxide on a temperate exoplanet.
How is this ranking ordered? By people's votes: each ▲ adds a point and each ▼ takes one away. Anyone can vote and add what is missing.
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Comments (1)
Les petits points rouges, c'est fou qu'on ne sache toujours pas vraiment ce que c'est. Galaxies compactes, trous noirs enveloppés... le débat continue