资讯

BBC2 年
Writing symbol equations
Symbol equations are a quick way of representing chemical reactions. They show us what atoms are involved and how they are bonded together. Symbol equations always take the form, reactants → ...
JWST captures its first direct images of carbon dioxide outside solar system
A star symbol marks the location of the host star HR 8799, whose light has been blocked by the coronagraph. In this image, ...
EurekAlert!23 天
Webb telescope captures its first direct images of carbon dioxide outside solar system
A star symbol marks the location of the host star ... Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet ...