Passion for understanding

Reionization: Ending the Dark Ages

Reionization: Ending the Dark Ages

How ultraviolet light from the first stars and galaxies reionized hydrogen, making the universe transparent again In the timeline of cosmic history, reionization marks the end of the so-called Dark...

Reionization: Ending the Dark Ages

How ultraviolet light from the first stars and galaxies reionized hydrogen, making the universe transparent again In the timeline of cosmic history, reionization marks the end of the so-called Dark...

The Dark Ages and First Structures

The Dark Ages and First Structures

A period before stars existed, when matter began gravitationally clumping into denser regions Following the epoch of recombination—when the universe became transparent to radiation and the Cosmic Microwave Background (CMB)...

The Dark Ages and First Structures

A period before stars existed, when matter began gravitationally clumping into denser regions Following the epoch of recombination—when the universe became transparent to radiation and the Cosmic Microwave Background (CMB)...

Recombination and the First Atoms

Recombination and the First Atoms

How electrons bound to nuclei, ushering in the “Dark Ages” of a neutral universe After the Big Bang, the universe spent its first few hundred thousand years in a hot,...

Recombination and the First Atoms

How electrons bound to nuclei, ushering in the “Dark Ages” of a neutral universe After the Big Bang, the universe spent its first few hundred thousand years in a hot,...

Dark Energy: The Enigma Driving Cosmic Acceleration

Dark Energy: The Enigma Driving Cosmic Accelera...

Dark energy is a mysterious component of the universe that is causing its expansion to accelerate. Despite constituting the majority of the universe’s total energy density, its precise nature remains...

Dark Energy: The Enigma Driving Cosmic Accelera...

Dark energy is a mysterious component of the universe that is causing its expansion to accelerate. Despite constituting the majority of the universe’s total energy density, its precise nature remains...

Dark Matter: Unveiling the Universe’s Hidden Mass

Dark Matter: Unveiling the Universe’s Hidden Mass

Dark matter is one of the most compelling mysteries in modern astrophysics and cosmology. Although it makes up the majority of the matter in the universe, its fundamental nature remains...

Dark Matter: Unveiling the Universe’s Hidden Mass

Dark matter is one of the most compelling mysteries in modern astrophysics and cosmology. Although it makes up the majority of the matter in the universe, its fundamental nature remains...

The Cosmic Microwave Background (CMB)

The Cosmic Microwave Background (CMB)

The relic radiation from when the universe became transparent ~380,000 years after the Big Bang The Cosmic Microwave Background (CMB) is often described as the oldest light we can observe...

The Cosmic Microwave Background (CMB)

The relic radiation from when the universe became transparent ~380,000 years after the Big Bang The Cosmic Microwave Background (CMB) is often described as the oldest light we can observe...