Artículos sobre Space

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A SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft onboard is raised into a vertical position on the launch pad at Launch Complex 39A. NASA/Bill Ingalls

SpaceX reaches for milestone in spaceflight – a private company launches astronauts into orbit

SpaceX's launch of astronauts to the International Space Station will make it the first private company to launch humans to space. The effort has ramifications for NASA and spaceflight in general.
Over the last 50 years, a lot has changed in rocketry. The fuel that powers spaceflight might finally be changing too. CSA-Printstock/DIgital Vision Vectors via Getty Images

To safely explore the solar system and beyond, spaceships need to go faster – nuclear-powered rockets may be the answer

An update of 50-year-old regulations has kickstarted research into the next generation of rockets. Powered by nuclear fission, these new systems could be the key to faster, safer exploration of space.
Asteroid Ryugu photographed from a distance of about 12 miles (20 kilometers) looks just gray and bland, but a close-up provides more color. JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu and AIST

Touching the asteroid Ryugu revealed secrets of its surface and changing orbit

It is a pretty spectacular achievement to not only rendezvous with an asteroid as it is whizzing around the Sun but also collect a sample. Here's what the researchers learned.
Surface detail of the Tomanowos meteorite, showing cavities produced by dissolution of iron. Eden, Janine and Jim/Wikipedia

Tomanowos, the meteorite that survived mega-floods and human folly

Tomanowos, aka the Willamette Meteorite, may be the world's most interesting rock. Its story includes catastrophic ice age floods, theft of Native American cultural heritage and plenty of human folly.
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 MB (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.

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