Tag Archives: instruments

OSIRIS data release – including “shadow” flyby

Remember the stunning image Rosetta snapped of its own shadow last year? This was just one of twelve images taken by the OSIRIS narrow-angle camera during the 6 km flyby of Comet 67P/Churyumov-Gerasimenko on 14 February 2015 that...

Rosetta’s comet contains ingredients for life

This story is mirrored from the ESA Web Portal Ingredients regarded as crucial for the origin of life on Earth have been discovered at the comet that ESA’s Rosetta spacecraft has been probing for almost two years....

The colour-changing comet

This story is mirrored from the ESA web portal, esa.int.  Rosetta’s comet has been seen changing colour and brightness in front of the ESA orbiter’s eyes, as the Sun’s heat strips away the older surface to reveal...

Profiling COSIMA’s dust grain family

Rosetta’s COSIMA instrument – the Cometary Secondary Ion Mass Analyser – has detected tens of thousands of dust grains since arriving at Comet 67P/Churyumov-Gerasimenko. The grains collected from 11 August 2014 – 3 April 2015 across nine...

Rosetta’s lander faces eternal hibernation

This article is mirrored from the main ESA web portal.  Silent since its last call to mothership Rosetta seven months ago, the Philae lander is facing conditions on Comet 67P/Churyumov–Gerasimenko from which it is unlikely to recover. Rosetta,...

Exposed ice on Rosetta’s comet confirmed as water

This article is mirrored from the main ESA Web Portal. Observations made shortly after Rosetta’s arrival at its target comet in 2014 have provided definitive confirmation of the presence of water ice. Although water vapour is the...

Reconstructing Philae’s flight across the comet

Data from both the Philae lander and Rosetta orbiter experiments, as well as simulation results based on Philae’s mechanical design have been used to reconstruct the lander’s attitude and motion during its descent and touchdowns on Comet...

The sound of Philae conducting science

Philae’s SESAME-CASSE ‘listened’ to the lander’s MUPUS instrument hammer the surface of Comet 67P/Churyumov-Gerasimenko last November. Martin Knapmeyer from the German Aerospace Centre, DLR, tells us more.   SESAME-CASSE is the Cometary Acoustic Surface Sounding Experiment located...

Rosetta and Philae: one year since landing on a comet

One year since Philae made its historic landing on a comet, mission teams remain hopeful for renewed contact with the lander, while also looking ahead to next year’s grand finale: making a controlled impact of the Rosetta...

First detection of molecular oxygen at a comet

ESA’s Rosetta spacecraft has made the first in situ detection of oxygen molecules outgassing from a comet, a surprising observation that suggests they were incorporated into the comet during its formation. This news story is mirrored from the main...

An update on Comet 67P/C-G’s water-ice cycle

Last week we reported on the daily water-ice cycle of Comet 67P/Churyumov-Gerasimenko that was observed in a specific region of the comet’s neck by Rosetta’s VIRTIS instrument, in September 2014. Yesterday at the European Planetary Science Congress, animations...

How Rosetta’s comet got its shape

This news item is mirrored from the main ESA Web Portal. Two comets collided at low speed in the early Solar System to give rise to the distinctive ‘rubber duck’ shape of Comet 67P/Churyumov–Gerasimenko, say Rosetta scientists. The...

ROSINA detects argon at Comet 67P/C-G

The noble gas argon has been detected in the coma of Comet 67P/Churyumov-Gerasimenko for the first time, thanks to the ROSINA mass spectrometer on-board Rosetta. Its detection is helping scientists to understand the processes at work during...

Rosetta reveals comet’s water-ice cycle

ESA’s Rosetta spacecraft has provided evidence for a daily water-ice cycle on and near the surface of comets. This story is mirrored from the main ESA web portal. Comets are celestial bodies comprising a mixture of dust...