Cool stuff
Science
- https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_astronomy
- https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_physics
- https://en.wikipedia.org/wiki/List_of_stars_that_have_unusual_dimming_periods
- https://en.wikipedia.org/wiki/List_of_star_extremes
- https://en.wikipedia.org/wiki/List_of_exoplanet_extremes
- https://en.wikipedia.org/wiki/Markarian’s_Chain
- https://en.wikipedia.org/wiki/Axis_of_evil_(cosmology)
- https://en.wikipedia.org/wiki/Titius–Bode_law
- https://en.wikipedia.org/wiki/Great_Attractor
- https://en.wikipedia.org/wiki/Period-luminosity_relation
- https://en.wikipedia.org/wiki/List_of_cloud_types
- https://en.wikipedia.org/wiki/Circumhorizontal_arc
- https://en.wikipedia.org/wiki/South_Atlantic_Anomaly
- https://en.wikipedia.org/wiki/Speckle_imaging
- https://en.wikipedia.org/wiki/Carrington_Event
- https://en.wikipedia.org/wiki/The_Hum
- https://en.wikipedia.org/wiki/Deep-sea_gigantism
- https://en.wikipedia.org/wiki/Impossible_color
Math
- https://en.wikipedia.org/wiki/Machin-like_formula
- https://en.wikipedia.org/wiki/Alpha_max_plus_beta_min_algorithm
- https://en.wikipedia.org/wiki/Euler–Maclaurin_formula
- https://en.wikipedia.org/wiki/Umbral_calculus
- https://en.wikipedia.org/wiki/Regression_dilution
- https://en.wikipedia.org/wiki/Bessel's_correction
- https://en.wikipedia.org/wiki/Log-normal_distribution
- Sunset Geometry