Tag Archives: science

Living with a comet: a GIADA team perspective

Rosetta’s Grain Impact Analyser and Dust Accumulator GIADA has detected and measured the properties of some 6650 comet dust particles. Principal Investigator Alessandra Rotundi reports on the “beautiful results” that her team’s instrument has collected at Comet...

Living with a comet: a MIDAS team perspective

This is the first of a series of blog posts that delve behind the scenes of Rosetta’s instrument teams to find out what it was really like “living with a comet” for two years, with some impressive...

Rosetta's 2014 selfie from a distance of about 16 km from the surface of 67P/C-G. Credits: ESA/Rosetta/Philae/CIVA

Beginning of the end

Today's blog post features detailed information on the intense, behind-the-scenes activities during Rosetta's final weeks.

ESA Hangout: Preparing for Rosetta’s grand finale

ESA’s Rosetta spacecraft is set to complete its incredible mission in a controlled descent to the surface of Comet 67P/C-G on 30 September. Join mission experts on 19 September, 1200 GMT / 1400 CEST to discuss Rosetta’s final...

Rosetta’s descent towards region of active pits

Squeezing out unique scientific observations until the very end, Rosetta’s thrilling mission will culminate with a descent on 30 September towards a region of active pits on the comet’s ‘head’. The region, known as Ma’at, lies on...

Rosetta catches dusty organics

Rosetta’s dust-analysing COSIMA (COmetary Secondary Ion Mass Analyser) instrument has made the first unambiguous detection of solid organic matter in the dust particles ejected by Comet 67P/Churyumov-Gerasimenko, in the form of complex carbon-bearing molecules. While organics had...

Imaging tiny comet dust in 3D

Rosetta has imaged the smallest grains of Comet 67P/Churyumov-Gerasimenko’s dust yet, with its Micro-Imaging Dust Analysis System, MIDAS.   MIDAS works by collecting and then physically scanning grains with an Atomic Force Microscope. This uses a very...

Rosetta captures comet outburst

This article is mirrored from the ESA Portal.  In unprecedented observations made earlier this year, Rosetta unexpectedly captured a dramatic comet outburst that may have been triggered by a landslide. Nine of Rosetta’s instruments, including its cameras, dust...

Rosetta finale set for 30 September

This article is mirrored from the ESA Web Portal.  Rosetta is set to complete its mission in a controlled descent to the surface of its comet on 30 September. The mission is coming to an end as...

OSIRIS data release: close orbits and lander delivery

The Rosetta Downlink and Archive group are pleased to announce the release of over 4000 OSIRIS images to the Archive Image Browser and the Planetary Science Archive. An Archive Science Review was successfully held in February resulting the need for...

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...

Getting to know the comet’s southern hemisphere

Now that Rosetta has been able to safely approach Comet67P/Churyumov-Gerasimenko again following the active months around perihelion last August, scientists have been able to better image the southern hemisphere regions of the comet. This week the spacecraft...

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,...