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Agrupació Astronòmica d’Osona

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ESA
NASA
Astro Sabadell

Rosetta witnesses birth of baby bow shock around comet

A new study reveals that, contrary to first impressions, Rosetta did detect signs of an infant bow shock at the comet it explored for two years – the first ever seen forming anywhere in the Solar System.

Slow flow for glaciers thinning in Asia

Providing water for drinking, irrigation and power, glaciers in the world’s highest mountains are a lifeline for more than a billion people. As climate change takes a grip and glaciers lose mass, one might think that, lubricated by more meltwater, they flow more quickly. However, satellite images from over the last 30 years show that it isn’t as simple as that.

Learning from lunar lights

Every few hours observing the Moon, ESA’s ‘NELIOTA’ project discovers a brilliant flash of light across its surface – the result of an object hurtling through space and striking our unprotected rocky neighbour at vast speed. Based at the Kryoneri telescope of the National Observatory of Athens, this important project is now being extended to January 2021.

Another El Niño on the horizon?

The jury is still out as to whether climate change will lead to stronger El Niño events, but while representatives from around 200 countries at the COP24 conference are working to breathe life into the 2105 Paris Agreement, there is a 75–80% chance that a fully-fledged event could be with us in the next couple of months.

Greenland ice loss quickening

Using a 25-year record of ESA satellite data, recent research shows that the pace at which Greenland is losing ice is getting faster.

M43: Orion Falls

Is there a waterfall in Orion?

Arp 188 and the Tadpole's Tail

Why does this galaxy have such a

Sound and Light Captured by Mars InSight

Your arm on Mars has unusual powers.

Aurora Shimmer, Meteor Flash

Some night skies are serene and passive -- others shimmer and flash.

Tiny Planet Timelapse

You can pack a lot of sky watching into 30 seconds on this tiny planet.

Cometa i telescopi

L'Aleix Roig ens envia la següent foto. Ens ho explica. "Imatge del pas del cometa 46P/Wirtanen aquesta matinada sobre el campanar de l’església de la vila vermella (Prades). Ben visible amb prismàtics ocupant una àrea major a una Lluna plena.

Detalls de la imatge: Sony A7S, objectiu Sony 24-240mm a f/5, montura StarAdventurer de Skywatcher, exposició 25” a 3200ISO.

Amb el pas dels dies es va aproximant al seu periheli que coincidirà (aproximadament) amb el pas pel costat de les Plèiades, sense dubte una imatge que no ens podem perdre! Prepareu els equips."

Més astrofotografies a la Galeria d'astroimatges

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