Phantom Methan

AstroGeo

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Methan gilt als Hinweis für Leben auf dem Mars. Seit Jahrzehnten wurde es immer wieder nachgewiesen. Eine neue spezialisierte Sonde findet das Gas allerdings nicht. Wieviel Wunschdenken um ungenaue Messwerte war im Spiel?

Musik: CC-BY 3.0 Mike Leite
Bild: NASA

AstroGeo ist ein Projekt der Weltraumreporter und entsteht dank eurer Spenden und Abo-Beiträge. Seid dabei: Weltraumreporter.de.

Links

• WP: Marskanäle
• WP: Giovanni Schiaparelli
• WP: Curiosity Rover
• WP: Methan
• Jorge Pla-García
• Sébastien Viscardy
• WP: Mars Express
• WP: ExoMars Trace Gas Orbiter

Bei den Weltraumreportern

• Rettet den Marsmaulwurf
• See unter dem Marsgletscher?
• Podcast: 366 Tage wie auf dem Mars
• Mars im Rückwärtsgang

Quellen

• Mumma et al.: Strong Release of Methane on Mars in Northern Summer 2003, Science (2009)
• Webster et al.: Mars methane detection and variability at Gale crater, Science (2015)
• Zahnle: Play it again, SAM, Science (2015)
• Giuranna et al.: Independent confirmation of a methane spike on Mars and a source region east of Gale Crater, Nature Geoscience (2019)
• Korablev et al.: No detection of methane on Mars from early ExoMars Trace Gas Orbiter observations, Nature (2019)

Kapitel

1. Schiaparelli und die canali (00:00:00)

2. Begrüßung (00:00:36)

3. Curiosity findet Methan (00:00:54)

4. Warum Marsmethan? (00:02:00)

5. Mars Express und die zweite Meinung (00:07:02)

6. Hoffnung auf den Trace Gas Orbiter (00:10:19)

7. Das Ergebnis der Spürnase (00:11:40)

8. Die Deutung (00:13:00)

9. Nächste Schritte (00:17:04)

10. Schluss (00:19:25)