Immagine EO della Settimana: Anteprima Sentinel

Immagine EO della Settimana: Anteprima Sentinel

NASA's Path to Mars

Laserové sbohem lunární misi

Laserové sbohem lunární misi

Joyas brillantes en el Plano Galáctico

Joyas brillantes en el Plano Galáctico

THE MASSIVE EL GORDO GALAXY CLUSTER

FROM:  NASA 

NASA's Hubble Space Telescope has weighed the largest known galaxy cluster in the distant universe, catalogued as ACT-CL J0102-4915, and found it definitely lives up to its nickname -- El Gordo (Spanish for "the fat one"). By measuring how much the cluster's gravity warps images of galaxies in the distant background, a team of astronomers has calculated the cluster's mass to be as much as 3 million billion times the mass of our sun. Hubble data show the galaxy cluster, which is 9.7 billion light-years away from Earth, is roughly 43 percent more massive than earlier estimates. The team used Hubble to measure how strongly the mass of the cluster warped space. Hubble's high resolution allowed measurements of so-called "weak lensing," where the cluster's immense gravity subtly distorts space like a funhouse mirror and warps images of background galaxies. The greater the warping, the more mass is locked up in the cluster.  Credit-NASA-ESA.

Week in Images

Week in Images

Euronews: I 50 anni dell'odissea spaziale dell'Europa

Euronews: I 50 anni dell'odissea spaziale dell'Europa

El campo de COSMOS en rayos X

El campo de COSMOS en rayos X

IN THE CONSTELLATION LIBRA

FROM:  NASA 

This new Hubble image is centered on NGC 5793, a spiral galaxy over 150 million light-years away in the constellation of Libra. This galaxy has two particularly striking features: a beautiful dust lane and an intensely bright center — much brighter than that of our own galaxy, or indeed those of most spiral galaxies we observe. NGC 5793 is a Seyfert galaxy. These galaxies have incredibly luminous centers that are thought to be caused by hungry supermassive black holes — black holes that can be billions of times the size of the sun — that pull in and devour gas and dust from their surroundings. This galaxy is of great interest to astronomers for many reasons. For one, it appears to house objects known as masers. Whereas lasers emit visible light, masers emit microwave radiation. The term "masers" comes from the acronym Microwave Amplification by Stimulated Emission of Radiation. Maser emission is caused by particles that absorb energy from their surroundings and then re-emit this in the microwave part of the spectrum. Naturally occurring masers, like those observed in NGC 5793, can tell us a lot about their environment; we see these kinds of masers in areas where stars are forming. In NGC 5793 there are also intense mega-masers, which are thousands of times more luminous than the sun.   Credit:  NASA, ESA, and E. Perlman (Florida Institute of Technology)

NASA's Kepler Discovers First Earth-Size Planet In The Habitable Zone of...

Liftoff of SpaceX-3 (+playlist)

Tower of Vega

Tower of Vega

Premières images radar pour Copernicus

Premières images radar pour Copernicus

From red Mars to green Earth

From red Mars to green Earth

A beleza que surge do caos

A beleza que surge do caos

THE BIG SPOT ON JUPITER

FROM:  NASA 

At about 89,000 miles in diameter, Jupiter could swallow 1,000 Earths. It is the largest planet in the solar system and perhaps the most majestic. Vibrant bands of clouds carried by winds that can exceed 400 mph continuously circle the planet's atmosphere. Such winds sustain spinning anticyclones like the Great Red Spot -- a raging storm three and a half times the size of Earth located in Jupiter’s southern hemisphere. In January and February 1979, NASA's Voyager 1 spacecraft zoomed toward Jupiter, capturing hundreds of images during its approach, including this close-up of swirling clouds around Jupiter's Great Red Spot. This image was assembled from three black and white negatives. The observations revealed many unique features of the planet that are still being explored to this day. > View more images and watch a time-lapse of Jupiter assembled from images taken by the spacecraft Credit: NASA's Goddard Space Flight Center. Images courtesy of NASA-JPL

James Webb Space Telescope Deployment In Detail

Extremen beheersen: inhuldiging testbank voor raketmotoren in Luik

Extremen beheersen: inhuldiging testbank voor raketmotoren in Luik

Cassini descubre patrones muy familiares sobre las dunas de Titán

Cassini descubre patrones muy familiares sobre las dunas de Titán

L'Italia di notte

L'Italia di notte

CELEBRATING HUBBLE ON 24TH ANNIVERSARY OF LAUNCH

FROM:  NASA 

In celebration of the 24th anniversary of the launch of NASA's Hubble Space Telescope, astronomers have captured infrared-light images of a churning region of star birth 6,400 light-years away. This colorful Hubble Space Telescope mosaic of a small portion of the Monkey Head Nebula unveils a collection of carved knots of gas and dust silhouetted against glowing gas. The cloud is sculpted by ultraviolet light eating into the cool hydrogen gas.  Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA).

Morpheus Completes 8th Free Flight

Full launch coverage

Full launch coverage

Watch Sentinel-1 launch

Watch Sentinel-1 launch

Double visite ministérielle à Redu

Double visite ministérielle à Redu

Hack a space app

Hack a space app

Week in Images

Week in Images