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Hier — 23 octobre 2026Presse

The ‘Exotic Physics’ Behind a Mysterious 1,000-Mile Cloud on Mars

The cloud has baffled astronomers since its discovery in 2018. Now, a new study offers a possible cause for its appearance.
À partir d’avant-hierPresse

How to See the Orionid Meteor Shower and Other Upcoming Astronomical Events

Made up of small fragments left behind by Halley’s Comet, these meteors are known for being especially bright and speedy.

Japan’s MMX Mission Wants to Bring Martian Moon Samples Back to Earth

JAXA is leading an international mission to reach Mars’ Phobos moon and bring soil back to Earth. If successful, it could unlock new clues about the history of the solar system.

Artemis III Scientist Shares What to Expect From NASA’s Next Lunar Mission

Though scaled back from initial plans of landing, the voyage will serve as a dress rehearsal for when humans return to the moon’s surface.

NASA Just Made Nearly 1 TB of Artemis II Data Available to the Public

The data drop includes photographs, audio, video, and astronauts’ notes that will be used to study the moon and prepare for future human missions.

A Scientist Working on the ‘IceCube’ Neutrino Detector Explains the Nobel Prize–Winning Technology

“Detecting a neutrino is like looking for a needle in a haystack,” says Juan Carlos Díaz Vélez, who breaks down why researchers are looking for the cosmic particles under the Antarctic ice.

Astronomers Confirm Discovery of the Youngest Known Exoplanet Ever

Under 1 million years old, “Elias 2-24b” is now the youngest exoplanet ever observed, and it may force researchers to reevaluate theories about how planets are formed.

Space Lasers Are About to Get Their First Real Test Generating Energy

Par : Brian Kahn
Startup Star Catcher is launching a system that, if successful, would be the first time energy has been beamed between two separate spacecraft.

A Gravitational Battle Within the Earth Is Changing the Length of Days

A competition between the gravity of the inner core and other forces in the mantle is altering the Earth’s rotation.

Venus May Have Devoured Its Moon

One of the great mysteries in astronomy has been why Venus has no moon. Now a new theory provides a simple answer: It might have been eaten.

Scientists Detect Radio Signals From an Exoplanet for the First Time in History

No, it’s not aliens, but a phenomenon caused by magnetic activity that astronomers have never before been able to pin on a specific planet.

After 8 Years in Space, ‘BepiColombo’ Is Finally Approaching Mercury

Following a difficult journey, the probe will soon begin unraveling the mysteries of Mercury’s magnetic field and internal structure.

A Satellite Falling Out of Orbit Embarks on Its Final Mission

Before reentering our atmosphere, the telescopes onboard NASA’s Neil Gehrels Swift Observatory have been restarted to take their last observations.

Astronomers Have Completed the Largest Map of Space. Yes, You Can Play With It

The intricate, 5.6 trillion-pixel map covers approximately 75 percent of the sky and includes about 4 billion celestial objects.

Japan Is Launching a Probe to Collect the First-Ever Samples From a Martian Moon

The mission to Phobos, Japan’s first Mars probe launch in 28 years, may reveal new information about our closest planetary neighbor.

What the Heck? Another Perfect Geometric Shape Has Been Detected on Saturn

The discovery adds to the planet’s history of strange atmospheric phenomena that scientists don’t fully understand.

The Diamond Moon and Other Astronomical Events to See in September 2026

September is full of opportunities to expand your knowledge of the night sky. Mark your calendars.

Scientists Create the Littlest Big Bang to Study the Universe's Origins

The discovery redefines how large atoms need to be to produce the extreme state of matter found in the early universe.

NASA’s Nancy Grace Roman Space Telescope Has a Hidden Technological Leap

Astronomers will test equipment that, if it’s successful, will one day be crucial for discovering Earthlike planets.

How to See the Partial Lunar Eclipse and Blood Moon on August 27

The eclipse will obscure about 93 percent of the moon’s surface. Here are the peak times and tips for the best viewing experience.

NASA’s New Space Telescope Is Poised to Discover Hidden Facets of the Universe

The Nancy Grace Roman Space Telescope is expected to discover as many as 200,000 new planets and reveal details about the elusive nature of dark matter and dark energy.

NASA Cancels Its Rescue Mission for the Aging Swift Telescope

The LINK probe was supposed to use robotic arms to capture Swift and lift it into a safe orbit. Problems with its control system forced NASA to call off the attempt.

The Galaxy’s Fastest Star Could Reveal the Secrets of a Supermassive Black Hole

S301 passes close to Sagittarius A*—so close that its orbit could reveal how the black hole’s rotation warps the spacetime around it.

Astronomers Discover the Existence of a Black Hole Star

An object observed by the James Webb Space Telescope lends credence to a strange explanation for the mysterious red spots in the early universe.

It’s Never Too Early to Start Planning for the Next Two Solar Eclipses

In 2027 and 2028, there will be two spectacular, long-duration solar eclipses. Here’s what you need to know about them.

Inside the Experimental Traps Scientists Set for Ghostly Neutrinos

Observatories have been built in mines, deep under the Antarctic ice sheet, and elsewhere in an effort to detect the fleeting particles.

Space Agencies Are Trying to Keep Astronauts From Losing Their Sight

A device currently being used to help octogenarians do self-administered eye exams could be part of future space missions to monitor astronauts’ ocular health.

The Sharpest Image Ever Taken of the Sun Reveals a Hidden Phenomenon

The photograph, taken in visible light, made it possible to observe for the first time the tiny plasma vortices that had been predicted for more than a century.

Here Are the First Images of the Crater Left on the Moon by SpaceX’s Rocket

The Korea Aerospace Research Institute shared images that show the gash on the surface. It’s pretty small.

Meteor Showers, Eclipses, and More Are on the August 2026 Astronomical Calendar

Here’s when some of this year’s most anticipated astronomical events will happen and the best way to observe them.

Welp, Nobody Saw SpaceX’s Falcon 9 Rocket Crash Into the Moon

Although no one captured a direct image of the impact, scientists have detected signals confirming the rocket hit the lunar surface. Orbiters could provide the first images of the crash site in the coming days.

The SpaceX Falcon Lunar Crash Is a Warning for Moon Bases

The risk of more debris hitting the moon is on the rise as the space race heats up.

The James Webb Telescope Is Changing Astronomers’ Understanding of the Ancient Cosmos

From how galaxies form to the beginnings of the universe, the images from the space telescope are giving cosmologists new data to explore—and theories to build out.

There Are 2 Eclipses This August. Here’s How to See Them

Everything you need to know about the solar eclipse and lunar eclipse that will occur in August 2026.

Astronomers Have Detected an Exomoon for the First Time

A discovery in a solar system 73 light-years from Earth is challenging definitions and “blurring the lines between stars, planets, and moons.”

SpaceX’s Falcon 9 Rocket Is About to Crash Into the Moon—and It Could Be Visible From Earth

The impact will kick up a plume of debris so high, it’ll likely be visible through some telescopes. Astronomers will be watching.

NASA’s New 3D Model Shows the Earth Is a Lumpy Mess

We like to think of our home as a nice, smooth sphere. But mapping the Earth’s gravitational field provides a different view of the planet.

An Extreme Solar Storm May Be Even More Devastating Than Previously Imagined

Scientists have long assumed that there’s an upper limit to the intensity of the solar winds that reach Earth. New research suggests there’s not—and the implications are alarming.

It’s Becoming Clear Why Black Holes Never Run Out of Fuel

Black holes eject powerful energy jets that blow away the surrounding gas to great distances. So how can they continue to grow?

One of NASA’s Most Important Deep Space Observatories Hit by Spanish Wildfires

Par : Brian Kahn
Flames burned through the Deep Space Communications Complex near Madrid, but NASA has been unable to assess the damage as a wildfire emergency grips the region.

The Search for Another Earth-Like Planet Just Took a Big Step Forward

Astronomers have discovered a rocky exoplanet that has an atmosphere and sits within the habitable zone of a solar system.

The US Approves Launch of Mirror Satellite That Can Reflect Sunlight and Illuminate the Earth at Night

The FCC authorized Reflect Orbital to launch the mirror satellite Eärendil-1. “For optical astronomy, this poses an existential threat,” the European Southern Observatory said.

China’s Tianwen-2 Space Probe Has Rendezvoused With Earth’s Quasi-Moon

The probe sent back the first pictures of the asteroid Kamo’oalewa. Next step: landing on the surface and collecting samples to send back to Earth.

Mysterious Compound Detected on Pluto and Titan

Something on Pluto and one of Saturn’s moons, Titan, absorbs light in a way unexplained by anything in spectroscopic databases.

British Space Startup Launches Longevity Lab Into Orbit

The lab will beam back data to train AI models to predict how proteins behind age-related diseases like Alzheimer’s and certain cancers behave.

Good News! Turns Out the Earth Will Never Be Swallowed by the Sun

A new study suggests that when our star becomes unstable in 5 billion years or so, Earth may avoid being engulfed by its fiery demise.

What if the Universe Isn’t as Uniform as Scientists Think?

A study based on 47 million galaxies found that the cosmic web retains patterns on enormous scales, which could force a reevaluation of a pillar of cosmology.

This Is the Most Detailed Image Yet of the Milky Way's Center

The Euclid space telescope's stunning photo of our galaxy's “crowded heart” captures more than 60 million stars.

How to See the Giant Asteroid That Will Pass by Earth This Weekend

The asteroid will be visible for several nights from different parts of the world. We’ll tell you when and where to look, and what equipment you’ll need to spot it.
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