Articles sur Solar system

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An illustration of Cassini as it plunges into Saturn’s atmosphere. NASA/JPL-Caltech

14 septembre 2017

Mission over: the final countdown to Cassini’s fatal plunge into Saturn

Ed Kruzins, CSIRO et Richard Stephenson, CSIRO

The last signals from Cassini space probe before it burns up in Saturn's atmosphere will tracked by the Canberra Deep Space Communication Complex.

Cassini captures Saturn’s largest moon, Titan. NASA/JPL-Caltech/SSI

13 septembre 2017

The secrets of Titan: Cassini searched for the building blocks of life on Saturn’s largest moon

Courtney Ennis, La Trobe University

The Cassini space probe discovered liquid lakes, poisonous gases and the basic elements of life on Saturn's moon, Titan.

Cassini makes the first radio occultation of Saturn’s rings producing this simulated image with green for particles smaller than 5cm and purple where particles are larger. NASA/JPL

6 septembre 2017

The beauty and mystery of Saturn’s rings revealed by the Cassini mission

Tanya Hill, Museum Victoria

The Cassini space probe took us up close and through the beautiful rings of Saturn. It captured some amazing images, and even the sound of the rings during its mission.

A Cassini portrait of five of Saturn’s moons. Janus (179km across) is on the far left, Pandora (81km across) orbits between the A ring and the thin F ring, Enceladus (504km across) is centre, Rhea (1,528km), is bisected by the right edge of the image and the smaller moon Mimas (396km) is seen beyond Rhea also on the right side of the image. NASA/JPL-Caltech/Space Science Institute

5 septembre 2017

What Cassini’s mission revealed about Saturn’s known and newly discovered moons

Tanya Hill, Museum Victoria

The Cassini space probe discovered several new moons on its mission to Saturn, and revealed fresh views of the moons we already knew about.

An illustration of Cassini diving between Saturn and the planet’s innermost ring. NASA/JPL-Caltech

4 septembre 2017

A look back at Cassini’s incredible mission to Saturn before its final plunge into the planet

Tanya Hill, Museum Victoria

With only days to go before NASA's Cassini space probe ends its two-decade mission to explore Saturn, what has it revealed about the ringed planet, the second largest in our solar system?

Two spacecraft concepts for the Plato mission. ESA

28 août 2017

The PLATO mission: an investigation of planetary systems

Frédéric Baudin, Université Paris Sud – Université Paris-Saclay

While we on Earth are familiar with our own star, the Sun, the European Space Agency's PLATO mission will explore solar systems similar to ours as well as those that are more exotic.

23 août 2017

Here’s the blueprint for a global fireball observatory – and why we need one

Luke Daly, University of Glasgow; Gareth Collins, Imperial College London et Martin Suttle, Imperial College London

Ten new remote cameras will soon be scouring the British night skies for meteorites.

Both Voyager spacecraft are only in communication with Earth via a Canberra tracking station. NASA/JPL

18 août 2017

From the edge of the Solar System, Voyager probes are still talking to Australia after 40 years

John Sarkissian, CSIRO et Ed Kruzins, CSIRO

The Voyager space probes sent back some amazing images of the planets in the outer Solar System, and they're still talking to Earth every day via Australia's tracking station.

NASA’s projection of the August 21 solar eclipse. NASA

3 août 2017

When the sun goes dark: 5 questions answered about the solar eclipse

Shannon Schmoll, Michigan State University

An astronomer explains how and why – and when – eclipses happen, what we can learn from them, and what they would look like if you were standing on the moon.

The Sun is currently middle-aged, having celebrated its 4,568,000,000th birthday at some point in the last million years. Flickr/ChopWood CarryWater

1 août 2017

Curious Kids: What’s going to happen to the Sun in the future? Will it explode?

Jonti Horner, University of Southern Queensland

In five or seven billion years time, the Sun's life will come to an end. And it will be really spectacular - if you're watching from far enough away.

The raw images of Jupiter’s Great Red Spot taken this week by the Juno probe. NASA/SwRI/MSSS

14 juillet 2017

Early images of the closest look at Jupiter’s Great Red Spot

Lucyna Kedziora-Chudczer, UNSW

The images are in from the Juno probe's closest flyby so far of Jupiter's Great Red Spot. Citizen scientists are now getting involved in processing those images.

Jupiter’s Great Red Spot observed by Juno in July 2017. .NASA/JPL-Caltech/MSSS/Kevin M. Gill

13 juillet 2017

Six mysteries of Jupiter’s Great Red Spot

Leigh Fletcher, University of Leicester et Emma Bunce, University of Leicester

Juno has flown closer to the solar system's most famous storm than any other spacecraft to take the most detailed images to date. They may help scientists reveal some of the spot's best-kept secrets.

Artist’s impression of Proxima Centauri b. ESO/M. Kornmesser

26 juin 2017

Help us find out what our possibly habitable exoplanet neighbour is actually like

Martin Archer, Queen Mary University of London

You may even be able to find other planets around the star closest to our solar system.

A view from the ‘Kimberley’ formation on Mars taken by NASA’s Curiosity rover. The strata in the foreground dip towards the base of Mount Sharp, indicating flow of water toward a basin that existed before the larger bulk of the mountain formed. NASA/JPL-Caltech/MSSS

15 juin 2017

The new space race: why we need a human mission to Mars

Malcolm Walter, UNSW

We could learn a lot from any mission to send people to Mars, such as whether there's life elsewhere in the universe or even the technology for new household appliances.

This enhanced-color image of Jupiter’s south pole and its swirling atmosphere was created by citizen scientist Roman Tkachenko using data from the JunoCam imager on NASA’s Juno spacecraft. NASA/JPL-Caltech/SwRI/MSSS/Roman Tkachenko

31 mai 2017

Juno mission unveils Jupiter’s complex interior, weather and magnetism

Lucyna Kedziora-Chudczer, UNSW

We may need to re-think our models of Jupiter’s formation thanks to the first results from Juno probe orbiting the planet, and new observations from Earth.

30 mai 2017

Venus has very few volcanoes – weirdly, this might be why it’s as hot as hell

Sami Mikhail, University of St Andrews

The planet is more similar to Earth than any other – except when it comes to supporting life.

11 mai 2017

Arguments why God (very probably) exists

Robert H. Nelson, University of Maryland

There remain many mysteries that are beyond science. Does that mean that a God truly exists? A scholar gives reasons for this possibility.

1 mai 2017

Japanese space agency’s mission aims to uncover how moons of Mars formed

Elizabeth Tasker, Japan Aerospace Exploration Agency (JAXA)

JAXA has announced a mission to visit the two moons of Mars and return a rock sample to Earth.

Saturn and its rings backlit by the sun, which is blocked by the planet in this view. Encircling the planet and inner rings is the much more extended E-ring. NASA/JPL/Space Science Institute

21 avril 2017

Water, weather, new worlds: Cassini mission revealed Saturn’s secrets

Dan Reisenfeld, The University of Montana

With the probe now on its 'Grand Finale,' a Cassini team member describes the amazing discoveries it made about the ringed planet and its many moons.

This illustration shows Cassini diving through geyser plumes on Saturn’s the ocean world moon of Enceladus. NASA/JPL-Caltech

20 avril 2017

Water, water, everywhere in our Solar system but what does that mean for life?

Jonti Horner, University of Southern Queensland

Earth is a relatively dry planet compared to some of the other ocean worlds in our Solar system. Life needs water so what about life on these other places?

Les contributeurs les plus fréquents

Jonti Horner
Vice Chancellor's Senior Research Fellow, University of Southern Queensland
Tanya Hill
Honorary Fellow of the University of Melbourne and Senior Curator (Astronomy), Museum Victoria
David Rothery
Professor of Planetary Geosciences, The Open University
Michael J. I. Brown
Michael J. I. Brown est un(e) ami(e) de The Conversation

Associate professor, Monash University
Alice Gorman
Alice Gorman est un(e) ami(e) de The Conversation

Senior Lecturer in archaeology and space studies, Flinders University
Helen Maynard-Casely
Instrument Scientist, Australian Nuclear Science and Technology Organisation
Lucyna Kedziora-Chudczer
Postdoctoral Fellow, Astrophysics Researcher, UNSW
Alan Duffy
Associate Professor and Research Fellow, Swinburne University of Technology
Andrew Coates
Professor of Physics, Deputy Director (Solar System) at the Mullard Space Science Laboratory, UCL
Kevin Orrman-Rossiter
PhD Research Student, History & Philosophy of Science, University of Melbourne
Simon Redfern
Professor in Earth Sciences, University of Cambridge
Elizabeth Tasker
Associate Professor, Japan Aerospace Exploration Agency (JAXA)
Jonathan P. Marshall
Postdoctoral fellow, UNSW
Monica Grady
Professor of Planetary and Space Sciences, The Open University
Geraint Jones
Reader in Planetary Science, UCL