Resetta.pptx

Rosetta and PhilaeThe first time we caught the comet!——Crescent Mars——A thin crescent Mars (white) captured by Rosetta’s OSIRIS Mission to Catch a Comet!Comets have inspired awe and wonder since the dawn of history. Many scientists today believe that comets crashed into Earth in its formative period spewing organic molecules that were crucial to the growth of life. Comets may have formed about the same time as the giant planets of our solar system (Jupiter, Saturn, Uranus, and Neptune) - about 4.6 billion years ago. Some scientists think that comets and planets were both made from the same clumps of dust and ice that spewed from our Sun’s birth; others think that these roving time capsules are even older than that, and that they may contain grains of interstellar stuff that is even older than our solar system!?彗星有灵感的敬畏和惊奇自古以来就存在。今天，许多科学家认为，彗星撞地球在其形成时期喷涌的有机分子，是生命的成长至关重要。一些科学家认为，彗星和行星都是由相同的团块的尘埃和冰冒出太阳的诞生；有人认为这些流浪时间胶囊比这更老，而且他们可能含有颗粒是星际的东西比我们的太阳系更老！NASA’s Planetary Science GoalsNASA has identified a number of key goals for planetary science, including the following:Learn how the suns family of planets and minor bodies originated.Determine how the solar system evolved to its current diverse state, including the origin and evolution of Earths biosphere.Determine whether there is or ever has been life elsewhere in the solar system.NASA行星科学的目标美国宇航局已经确定了一些行星科学的主要目标，包括以下内容：?了解太阳的行星家庭和小天体的起源。?确定太阳系是如何演变到目前的各种状态，包括地球的起源和演化的生物圈。?确定是否有或曾经有太阳系中其他地方的生命。Rosetta’s Science Goals The prime scientific goal of this mission is to seek the origin of comets. Did they form within our solar system or outside of it, in interstellar space? To find these answers, Rosetta scientists are using the scientific instruments onboard to learn as much as they can about comet C-G. They will:Create a portrait of the comet’s nucleus - its shape and dynamic properties.Take a complete inventory of the comet’s chemical, mineralogical, and isotopic composition.Detail the comet’s physical properties and show how