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Giotto (spacecraft)

European mission to comets Halley and Grigg–Skjellerup (1985–1992)

Giotto was a Europeanrobotic spacecraft mission from the European Space Agency. The spacecraft flew by and studied Halley's Comet and in doing so became the first spacecraft to make close up observations of a comet. On 13 March 1986, the spacecraft succeeded in approaching Halley's nucleus at a distance of 596 kilometers. It was named after the Early Italian RenaissancepainterGiotto di Bondone. He had observed Halley's Comet in 1301 and was inspired to depict it as the star of Bethlehem in his painting Adoration of the Magi in the Scrovegni Chapel.

Mission

Development

Members of the ESA’s Solar System Working Group started investigating a mission to Halley’s comet in 1977 before rejecting it in August 1978 in favour of a lunar orbiter.[3] Shortly afterwards this was reversed by the Science Advisory Committee and the ESA started to study a joint mission with NASA.[3] This mission was to be the International Comet Mission consisting of a carrier

Giotto overview

Science & Exploration

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ESA / Science & Exploration / Space Science

Name: Giotto, after Italian painter Giotto di Bondone who observed Halley's Comet in 1301 and depicted it as the star of Bethlehem in his painting Adoration of the Magi in the Scrovegni Chapel

Launched: 2 July 1985

Status: Completed (1992)

Objective
Making encounters with comets Halley and Grigg–Skjellerup, Giotto was ESA’s first deep-space mission. It imaged a comet nucleus for the first time and found the first evidence of organic material on a comet.

Mission
Giotto was ESA’s first deep-space mission. In 1986, it passed closest to the nucleus of a comet, Halley. Its images showed for the first time the shape of a comet nucleus and found the first evidence of organic material in a comet.

In 1992, after a long cruise through space, Giotto was directed to Comet Grigg–Skjellerup. It sent back a lot of information, passing just 200 kilometres from the nucleus.

What’s special?

Giotto had a number of very impressive ‘firsts’ and achievements to its credit:

Giotto, ESA's first deep-space mission: 25 years ago

Agency

11/03/20115174 views2 likes

ESA / About Us / ESA history

In 1986, ESA's Giotto passed closest to the nucleus of Comet Halley and revealed the first evidence of organic material in a comet. Much of what we know about comets comes from the pioneering Giotto mission.

Twenty-five years ago, during the night of 13-14 March 1986, the Giotto spacecraft swept within 600 km of Comet Halley, obtaining the first ever close-up images of a comet nucleus. The image sequence taken by the Halley Multicolour Camera revealed a black, potato-shaped object, partially illuminated on the warmer, sunlit side with bright jets spewing gas and dust into space.

Giotto had a number of other very impressive ‘firsts’ and achievements to its credit. It was the first deep-space mission to change orbit by returning to Earth for a gravity-assist manoeuvre. It was also the first spacecraft to encounter two comets and in doing so measured the size, composition, and velocity of dust particles and measured the composition of those two comet

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