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Cosmic Conflict: Diverging Data on Universe’s Expansion Polarizes Scientists
A disagreement between two canonical measures of intergalactic distances could signal a renaissance in physics—or deep flaws in our studies of cosmic evolution
A Conversation with Thomas Hertog, One of Stephen Hawking’s Final Collaborators
The theoretical physicist talks with Scientific American about the far-reaching implications of his final collaboration with his late friend and mentor
Evidence Builds for a New Kind of Neutrino
“Sterile neutrinos” that ignore all other particles might be showing up in experiments—and could even help solve the mystery of dark matter