Articles sur Space

Affichage de 1 à 20 de 378 articles

Two CubeSats, part of a constellation built and operated by Planet Labs Inc. to take images of Earth, were launched from the International Space Station on May 17, 2016. NASA

Hackers could shut down satellites – or turn them into weapons

SpaceX and other companies are rushing to put thousands of small, inexpensive satellites in orbit, but pressure to keep costs low and a lack of regulation leave those satellites vulnerable to hackers.
Unlike Earth’s atmosphere, Jupiter’s ‘sky’ hosts magnificent shades of orange, white, brown and blue. NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstädt

Curious Kids: is the sky blue on other planets?

Atmospheres can be all different colours, depending on what's in them.
A planet-forming disk made from rock and gas surrounds a young star. NASA/JPL-Caltech/SwRI/MSSS/ Gerald Eichstädt /Seán Doran

Even planets have their (size) limits

Why isn't there an endless variety of planets in the universe? An astrophysicist explains why planets only come in two flavors.
The Parkes radio telescope can detect extremely weak signals coming from the most distant parts of the Universe. Shutterstock

The Dish in Parkes is scanning the southern Milky Way, searching for alien signals

The Dish in Parkes is scanning the southern Milky Way, searching for alien signals. The Conversation50,7 Mo (download)
Today we hear about the Parkes radio telescope's role in the search for alien life. Our guide is the irrepressible John Sarkissian, the scientist who's had his eye on The Dish since childhood.
An artist’s conception of WASP-18b, a giant exoplanet that orbits very close to its star. X-ray: NASA/CXC/SAO/I.Pillitteri et al; Optical: DSS

A real-life deluminator for spotting exoplanets by reflected starlight

Sometimes it is difficult to take a photograph of an exoplanet because the star illuminating it is too bright. Now there is a new 'deluminator' telescope that can block out the extra light.
In 2015, NASA’s New Horizons spacecraft looked back toward the sun and captured this near-sunset view of the rugged, icy mountains and flat ice plains extending to Pluto’s horizon. NASA/JHUAPL/SwRI

Planetary confusion – why astronomers keep changing what it means to be a planet

Many people are still upset that Pluto was demoted from being a planet. But definitions of various celestial objects are fairly fluid. So whether it is an asteroid or moon or planet is up for debate.
An artist’s conception of two black holes entwined in a gravitational tango. NASA/JPL-Caltech/SwRI/MSSS/Christopher Go

Supermassive black hole at the center of our galaxy may have a friend

There is a massive black hole in the center of the Milky Way galaxy. Measurements of star orbits near this black hole suggest that there may be a second companion black hole nearby.
Measuring in at 10,159 miles (16,350 kilometers) in width (as of April 3, 2017) Jupiter’s Great Red Spot is 1.3 times as wide as Earth. NASA/JPL-Caltech/SwRI/MSSS/Christopher Go

Contrary to recent reports, Jupiter’s Great Red Spot is not in danger of disappearing

Little bits of Jupiter's Great Red Spot seem to be flaking off. Is it a sign of the demise of this enigmatic red cloud, or just a consequence of atmospheric chaos we can't see from above?
Could an alien world look like this? Shutterstock

Curious Kids: What would aliens be like?

Somewhere out there, just maybe, an alien – probably stranger looking than in our wildest imagination – might be pondering this very question.
Astronaut Alan L. Bean, Apollo 12, walks on the Moon’s surface. Commander Charles Conrad Jr. is reflected in Bean’s helmet visor. NASA/JHUAPL/SwRI

Apollo 12: Fifty years ago, a passionate scientist’s keen eye led to the first pinpoint landing on the Moon

Apollo 11 tends to steal the spotlight when it comes to lunar landings. But Apollo 12 was the first mission to make a precise pinpoint landing on the Moon - and without the aid of computers or GPS.
This artist’s impression shows a view of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system. ESO/M. Kornmesser

NASA’s TESS spacecraft is finding hundreds of exoplanets – and is poised to find thousands more

Beyond the outer edge of the Solar System, mysterious, unknown worlds await by the thousands. Astronomers can now finally find them and explore them - but will we find another Earth?

Les contributeurs les plus fréquents

Plus