Terrestrial Solar System planets either have high mean molecular weight atmospheres, as with Venus, Mars, and Earth, or no atmosphere at all, as with Mercury.
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Extrasolar Planets: May 2018
K2-18 is a nearby M2.5 dwarf, located at 34 pc and hosting a transiting planet which was first discovered by the K2 mission and later confirmed with Spitzer Space Telescope observations.
Calendar
- 29 Sep: NASA SpaceX Crew-1: Preview Briefings and Interviews
- 29 Sep: Webinar: Exploring Maryland's Significant Contributions to NASA's Mission
- 29 Sep: EngageSpace
- 29 Sep: Webinar: Designing Research Campaigns for Biological and Physical Sciences in Space
- 29 Sep: Webinar: Designing Research Campaigns for the Next Decade of Biological & Physical Sciences in Space
- 30 Sep: Hearing: NASA Missions and Programs: Update and Future Plans
- 30 Sep: Lunar Science Workshop: Planetary Protection/PSR Classification
- 1 Oct: Aerospace Safety Advisory Panel Meeting
- 2 Oct: NASA International Space Apps Challenge
- 6 Oct: Seeking Strategic Advantage: How Geopolitical Competition and Cooperation are Playing Out in Space
- * Submit Your Event | More Events *
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