#2828: Exoplanet Observation

XKCD comic, described below.
Transcript

[Cueball is holding a stick and pointing at a slide with two ghosts and a planet. The slide has unreadable scribbles of text and arrows pointing from the two ghosts toward the planet.]

Cueball: When the planet passed in front of its host star, some of the light was absorbed by ghosts, indicating that the planet is likely haunted.

[Caption below the panel]

Exoplanet Spectral Analysis


(Sourced from explainxkcd.com)

Title text:NASA prefers to say that their rovers are 'looking for signs of past life on Mars' and not 'ghost hunting.'


ExplainOriginal