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Deep Space Astronomy

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Lithium in the Universe: Why this Simple Element is so Rare

By: Stephanie Cox

Planet Hunting: The Search for Planets around Other Stars

By: Feature Writer Kelly Whitt

When Galaxies Collide: The Solar System's Future Home

By: Stephanie Cox

Colliding Galaxies: Great Mergers in the Universe

By: Feature Writer Kelly Whitt

Hole in the Universe: Astronomers Find a Giant Cosmic Void

By: Feature Writer Kelly Whitt

Pulsars and Neutron Stars: Black Holes, Neutrons, and Pulsars

By: Shawn Landis

Black Hole or Neutron Star: How the Mass Tells Us What an Astronomical X-Ray Source Is

By: Feature Writer Paul A. Heckert

Event Horizon and Photon Sphere: Static Isolated Black Hole Structure Outside Schwarzschild Radius

By: Feature Writer Paul A. Heckert

Discovery of Astronomical X-Rays: Cygnus X-1, the First Star Identified as a Likely Black Hole

By: Feature Writer Paul A. Heckert

X-Ray Flickering in Cygnus X-1: Identifying HDE226868, Optical Counterpart to a Likely Black Hole

By: Feature Writer Paul A. Heckert

Black Hole Singularity: Structure Inside the Event Horizon or Schwarzschild Radius

By: Feature Writer Paul A. Heckert

Origin of the Idea of Black Holes: Corps Obscura to Schwarzschild's Solution to Einstein's Equation

By: Feature Writer Paul A. Heckert

Google Sky: From the Earth to the Universe

By: Feature Writer Kelly Whitt

Supernova Destroys Star Rho Cas: A Last Silent yet Bright Explosion Spews Star-Stuff Deep into Space

By: Feature Writer Frank W. Hardy

Is the Universe Expanding: Dark Matter and Dark Energy Quash the Debate

By: Feature Writer Frank W. Hardy

Black Holes Space/Time Distortion: Where Gravity has Gone Wild - What Falls in Never Comes Out

By: Feature Writer Frank W. Hardy

The Circle of Life The End: The Death and Rebirth of Stars

By: Feature Writer Frank W. Hardy

Feeding Black Holes: Illumination of the Invisible

By: Feature Writer Frank W. Hardy

The Circle of Life The Beginning: The Birth and Life of Stars

By: Feature Writer Frank W. Hardy

Stellar Populations in the Galaxy: Walter Baade's Discovery of Population I and II Stars

By: Feature Writer Paul A. Heckert

Multiple and Binary Star Systems: Optical Double Stars & Visual, Eclipsing, & Spectroscopic Binaries

By: Feature Writer Paul A. Heckert

Galaxies and Clusters of Galaxies: The Milky Way Galaxy and Large Scale Structure of the Universe

By: Feature Writer Paul A. Heckert

Astronomical Clustering of Stars: Globular and Galactic (Open) Clusters and O and B Associations

By: Feature Writer Paul A. Heckert

Hubble's Galaxy Classifications: Irregular, Elliptical, & Normal & Barred Spiral Galaxies

By: Feature Writer Paul A. Heckert

Most Distant Galaxies: Seeing Back to the Edge of the Cosmic Dark Ages

By: Feature Writer Kelly Whitt

Neutron Star Has Monster X-Ray Jet: Power Source Rivals Black Holes

By: Feature Writer Kelly Whitt

Double Supernova Seen: One Galaxy Hosts Two Gigantic Explosions

By: Feature Writer Kelly Whitt

Anasazi Supernova Observations: Chaco Canyon Petroglyph May Record 1054 Birth of the Crab Nebula

By: Feature Writer Paul A. Heckert

Crab Nebula Supernova Observations: Ancient Chinese Records of the July 4, 1054 Supernova

By: Feature Writer Paul A. Heckert

The Crab Nebula Supernova 1054 AD: The Biggest July 4 Fireworks Explosion in History Formed M1

By: Feature Writer Paul A. Heckert

Imaginary Time—Not What You Think: In Mathematics and Physics Imaginary Time Really Does Exist

By: Charles Anderson

Gravitational Lens and Dark Matter: Massive Galaxies Bend Light from Distant Quasars

By: Feature Writer Paul A. Heckert

Evidence for Dark Matter Found: A Ring of Dark Matter Has Been Discovered in a Galaxy Cluster

By: Feature Writer Kelly Whitt

Biggest Supernova Discovered: Gigantic Stellar Explosion Reveals New Type of Supernova

By: Feature Writer Kelly Whitt

Gliese 581c: Telescope at European Southern Observatory Detects New Planet

By: Scott Hayden

New Planet May Harbor Life: The First Earth-Like Habitable Exoplanet Has Been Discovered

By: Feature Writer Kelly Whitt

Black Holes, What are They? Why Nothing Can Escape From a Black Hole

By: Feature Writer Paul A. Heckert

Variable Star Classifications: Types of Stars that Change in Brightness

By: Feature Writer Paul A. Heckert

Falling into Black Holes: Earth's Orbit if the Sun Collapsed to a Black Hole

By: Feature Writer Paul A. Heckert

Exploring Supernovae: Looking at the Different Kinds and Notable Historic Explosions

By: Feature Writer Kelly Whitt

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