Deep Space
Deep Space
Updated by Spaceweathertracker staff ·
In-depth, carefully hedged explainers on the objects and physics beyond our solar system — nebulae, stars, exoplanets, supernovae, and the earliest light in the universe.
Nebulae and Star-Forming Regions
How emission, reflection, and dark nebulae work, and how cold interstellar hydrogen collapses under gravity to form new stars.
The Mechanics of Constellation Mapping
How the 88 official IAU constellation boundaries work, what an asterism actually is, and why the stars appear to move across the sky.
Deep-Space Astrophysics & Stellar Evolution
The life cycle of a star, from main-sequence hydrogen fusion through to white dwarfs, neutron stars, and stellar-mass black holes.
Atmospheric Spectroscopy of Exoplanets
How space telescopes detect water, methane, and carbon dioxide in the atmospheres of distant exoplanets during transit.
Supernovae & the Creation of Heavy Elements
How core-collapse and Type Ia supernovae work, and how these explosions forge and scatter heavy elements across space.
The Cosmic Microwave Background Radiation
What the Cosmic Microwave Background is, why it's considered strong evidence for the Big Bang, and what its temperature variations reveal.
Pulsars & Magnetar High-Energy Mechanics
What neutron stars, pulsars, and magnetars are, and how their extreme rotation and magnetic fields produce observable radiation beams.
Looking for the biggest cosmological questions instead — the Big Bang, dark matter, or how the universe ends? Visit The Universe.