... Comets are `dirty snowballs' - 1 to 10 km diameter lumps of ice (water-ice, methane-ice, CO 2 ice) and dust - which originate from the outer Solar System. ~2 million comets are thought to lie in the Kuiper belt (beyond Neptune's orbit) . ...
... that I plan to c ontinue in the fut ure but will mention only briefly here: 1) To gain a clearer understanding of how water-ice in disks around young stars is chemic ally and thermally proc essed by accretion activity, I hav e initiated a s urvey of the 2 ...
... These rings are hypothesised to include at least some waterice particles; previous spectroscopic observations had shown variable water-ice features, together with photometric variability, that could be explained if the rings were edge-on to earth at that ...
... Those rings are hypothesised to include at least some waterice particles; previous spectroscopic observations had shown variable water-ice features, together with photometric variability, that could be explained if the rings were edge-on to earth at that ...
... SWAS: found · Water vapor is present in almost all star-forming regions · Gas-phase water abundance peaks near molecular surfaces; · Molecular clouds have an abundance of water-ice in their interiors . ...
... By searching for planets around pre-main sequence stars carefully selected to span an age range from 1 to 100 Myr, we will learn at what epoch and with what frequency giant planets are found at the water-ice "snowline" where they are expected to form. ...
... Saturn's moon Titan is a Mercury-sized world rich in organic molecules, has a dense atmosphere, and possesses a water-ice and rock interior that could, under other circumstances, supply abundant water for life. ...
[
Текст
]
Ссылки http://www.stsci.edu/jwst/doc-archive/white-papers/SRD.pdf -- 2341.6 Кб -- 01.03.2014 Похожие документы
... Saturn's moon Titan is a Mercury-sized world rich in organic molecules, endowed with a dense atmosphere, and possessed of a water-ice and rock interior that could, under other circumstances, supply abundant water for life. ...
[
Текст
]
Ссылки http://www.stsci.edu/jwst/news/2005/science-requirements.pdf -- 1600.7 Кб -- 05.02.2013 Похожие документы