Did Comets Seed Life? Rosetta's Journey to Answer Cosmic Questions
In short: The European Space Agency's Rosetta mission orbited comet 67P/Churyumov-Gerasimenko to investigate fundamental questions: Did water arrive on Earth from comets, and were comets responsible for kickstarting life? The data collected offers unprecedented views into a celestial body's volatile composition.
Rosetta was an ESA mission designed to orbit the periodic comet 67P/Churyumov-Gerasimenko and deploy a lander, Philae, to achieve the first controlled touchdown on a comet nucleus. The mission utilized 21 onboard instruments—11 on the orbiter and 10 on the lander—to explore two major scientific hypotheses: the origin of Earth's water from comets and the role of comets in initiating life on our planet. The comet itself was characterized as having a mass of approximately 10 billion tonnes, a shape likened to a rubber duck, and a rotation period of 12 hours and 24 minutes, details established after the spacecraft emerged from hibernation in January.
The spacecraft's instruments provided detailed observations of the comet's activity. Cameras captured visible evidence of gas and dust streaming away from the nucleus, allowing scientists to pinpoint and image active areas for the first time. Furthermore, the orbiter was able to detect both water and gases within the comet's atmosphere or coma, alongside capturing dust grains. Despite this wealth of visual data, researchers noted significant unknowns, such as the precise cause of the powerful jets of dust and ice, or why the comet was covered in organic material rather than solely ice.
The mission culminated in significant operational milestones. By February 15, 2016, Rosetta scientists unveiled the source of the ice and dust jets after the spacecraft had spent the preceding year less than 100km from the nucleus. The journey involved approaching the surface, returning high-resolution images that revealed a stark, pitted landscape featuring ragged cliffs and boulder-strewn plains. The mission's planned finale involved the orbiter approaching the surface, with plans set for a landing on September 30th, following the initial touchdown by Philae.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: Rosetta's science
- Also: Rosetta - NASA Science
To cite this card, link to https://intellectplus.co.uk/app/space-rosetta-s-science.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Comets · More in Space · Latest · A–Z · All topics
