Black Holes & SingularitiesThe Biggest Black Holes in the Universe, Ranked
From the 4-million-solar-mass heart of our galaxy to a 100-billion-solar-mass monster that strains physics itself — a tour of the heavyweight champions of the cosmos.

Breaking · Oct 12, 2026
From super-greenhouse gases to an artificial magnetosphere, here is the actual engineering sequence scientists have proposed to make Mars habitable — and how long each step would take.
Fresh off the wire
Black Holes & SingularitiesFrom the 4-million-solar-mass heart of our galaxy to a 100-billion-solar-mass monster that strains physics itself — a tour of the heavyweight champions of the cosmos.
Black Holes & SingularitiesPast the event horizon, our best theories collapse into contradiction. Firewalls, fuzzballs, and wormholes — a tour of physics’ most guarded secret.
Black Holes & SingularitiesA sequence of polarized images captures a blob of plasma circling our galaxy’s central black hole every 70 minutes, just outside the horizon.
Black Holes & SingularitiesSeveral galaxies at redshift 10+ host black holes far too heavy for their stars, supporting the theory that some formed directly from collapsing gas clouds.

Astronomy Picture of the Day
Towering columns of cool interstellar gas and dust in the Eagle Nebula glow in this near-infrared view. New stars forming inside the pillars appear as bright red orbs at their tips.
NASA's APOD ArchiveNews Wire
Fresh imagery from NASA and live launch data from agencies worldwide, pulled live on every visit.
Gallery
Key frames from our long-form stories — each one opens the full article.

How to Turn Mars Into Earth: The Step-by-Step Blueprint

Dyson Spheres: Have We Already Spotted an Alien Megastructure?

The Biggest Black Holes in the Universe, Ranked

The Fermi Paradox: Where Is Everybody?

Project Starshot: Sailing to Alpha Centauri at 20% Light Speed

What’s Inside a Black Hole? The Singularity Problem

EHT Films a Hot Spot Orbiting Sagittarius A*

Fast Radio Burst Repeats Every 16 Days, Stumping Astronomers

A Sharper Spectrum of K2-18 b Reopens the Ocean World Debate

JWST Reveals Hidden Star Nurseries in Carina’s Cosmic Cliffs

JWST Spots "Naked" Black Hole Seeds That Skipped Stellar Birth

Are Europa’s Water Plumes Real? Clipper Is Built to Find Out

Ship-to-Ship Refueling: the Key to the Moon and Mars