Watch these 2 planets: Mercury and Mars | | They're not the brightest planets in the sky now, and they're visible only briefly after sunset. But - around June 18 - Mercury and Mars will have the closest conjunction of 2 planets for 2019. Read more. | | |
IAU invites countries to name an exoplanet | | Nearly 100 countries have already signed up to organize national campaigns, to provide the public with an opportunity to vote. The deadline is July 30 to express interest in organizing a national campaign. The IAU will announce results in December. Read more. | | |
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