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