gravitational lensing

Sagittarius A*: Up Close and Personal With a Gravitational Beast

Scientists Release the First Image of the Milky Way’s Supermassive Black Hole

Albert Einstein, general theory of relativity, gravitational lensing, Fritz Zwicky, Hubble constant, expansion of the universe, Sjur Refsdal, Orest Chwolson, Arthur Eddington, active galactic nuclei, black hole, Type Ia supernovae, Palomar Transient Factory,

How Astronomers Use Ginormous Natural Lenses to Study Distant Space Explosions

angular resolution, black hole, black holes, Event Horizon Telescope, interstellar dust, M87 galaxy, Milky Way galaxy, radio waves, Sagittarius A*, very-long baseline interferometry, Virgo constellation,

First Light From the M87 Black Hole: What Are We Looking At?

angular resolution, black hole, black holes, Event Horizon Telescope, interstellar dust, M87 galaxy, Milky Way galaxy, radio waves, Sagittarius A*, very-long baseline interferometry, Virgo constellation,

A 200-Year-Old Experiment Has Helped Us See a Black Hole’s Shadow

Study Says Tiny Black Holes May Not Account for Dark Matter

Composite image showing the discovery of the most distant known star, Icarus. Credit: NASA/ESA/P Kelly(University of Minnesota)

Hubble Telescope Detects The Farthest Individual Star Ever