Pierre Janssen
French astronomer credited with detecting helium in sunlight in 1868
Pierre Janssen (French astronomer credited with detecting helium in sunlight in 1868) is discussed on podcasts in TMT.
Discussed in
#2506 - Michelle ThallerThe Joe Rogan Experience · May 28, 2026 · 2 h 44 min
Joe Rogan and astrophysicist Michelle Thaller discuss black holes, relativity, quantum entanglement, the Big Bang, NASA missions, AI, consciousness and psychedelics.