Hubble’s Law: Evidence of an Expanding Universe
Hubble’s Law is a fundamental observation in cosmology that shows galaxies are moving away from us, and that their recession
Cosmological Constant: The Energy of Empty Space
The cosmological constant (Λ) is a term in Einstein’s field equations of general relativity that represents the energy density of
Redshift: Light Stretched by Motion and Gravity
Redshift refers to the increase in the wavelength of light or other electromagnetic radiation, causing it to shift toward the
Quasars: Beacons of the Early Universe
Quasars (short for quasi-stellar objects) are incredibly bright and energetic active galactic nuclei (AGN) powered by supermassive black holes at
Fast Radio Bursts: Cosmic Radio Flashes from the Unknown
Fast Radio Bursts (FRBs) are brief but incredibly intense pulses of radio waves that last for only a few milliseconds
Magnetars: The Universe’s Magnetic Monsters
Magnetars are a rare and exotic type of neutron star known for having the strongest magnetic fields in the universe—trillions
Pulsars: Cosmic Lighthouses in the Sky
Pulsars are highly magnetized, rotating neutron stars that emit intense beams of electromagnetic radiation from their magnetic poles. As the
LIGO and Virgo: Listening to Ripples in Spacetime
LIGO (Laser Interferometer Gravitational-Wave Observatory) and Virgo are advanced scientific observatories designed to detect gravitational waves—tiny ripples in spacetime caused
Frame Dragging: When Spacetime Gets Twisted
Frame dragging is a fascinating prediction of Einstein’s general relativity, where rotating massive objects—like planets, stars, or black holes—twist the
Gravitational Redshift: Light Loses Energy Climbing Out
Gravitational redshift is a phenomenon predicted by general relativity, where light or electromagnetic radiation loses energy as it escapes from