What type Ia supernovae revealed in 1998 — the expansion of the universe is accelerating, implying dark energy

What cosmological evidence from the Cosmic Microwave Background (CMB) anisotropies observed in 2003 supports the presence of dark matter in the universe?

CMB anisotropies indicate large-scale structure formation, consistent with dark matter's gravitational influence

What the CMB power spectrum tells us — the age, composition, and geometry of the universe

CMB power spectrum reveals universe's age, composition, and large-scale structure

How Eddington's 1919 eclipse observation confirmed general relativity — starlight bent by the Sun

Eddington's eclipse observation showed starlight bending due to the Sun's gravity, confirming general relativity

What the cosmological constant problem is — quantum field theory predicts vacuum energy 10^120 times too large

Quantum field theory overestimates vacuum energy by 10^120 times, causing the cosmological constant problem

What dark matter candidates include — WIMPs, axions, sterile neutrinos, primordial black holes

Dark matter candidates: WIMPs, axions, sterile neutrinos, primordial black holes

How do the results from LIGO and Virgo collaborations provide evidence for gravitational waves, thereby supporting the predictions of general relativity?

LIGO and Virgo detectors' measurements of gravitational wave signals confirm Einstein's general relativity predictions