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Astronomy 101

Astronomy 101: Cosmic Inflation

TO SEE VIDEO:

http://www.astronomy.com/videos

While developed to explain the large-scale structure of the universe, the theory of a short period of extremely rapid expansion in the early cosmos still lacks physical evidence today.

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Astronomy 101

Astronomy 101: Cosmic Inflation

TOPICS: COSMOLOGY, COSMIC INFLATION

When light strays, part 1

TOPICS: ASTROIMAGING

Web Extra: Watch how NuSTAR unfolded in space

TOPICS: NUSTAR

Web Extra: Rebirth of a legendary telescope

TOPICS: TELESCOPES,REFRACTOR

October 2015: Secrets from Titan's seas

New data from Antarctic detector firms up cosmic neutrino sighting

TOPICS: SPACE PHYSICS,NEUTRINOS

The Real Reality Show: Have Astronomers Discovered Other Earths?

TOPICS: EXOPLANETS, SUPER EARTHS

Tour the Solar System

Tour the solar system: Pluto and the Kuiper Belt

TOPICS: PLUTO, KUIPER BELT

Charting the slow death of the universe

TOPICS: COSMOLOGY,GALAXIES

From a million miles away, NASA camera shows Moon crossing face of Earth

TOPICS: SOLAR SYSTEM,EARTH, THE MOON

Cruise over Ceres in new video

TOPICS: SOLAR SYSTEM,CERES, DWARF PLANETS,DAWN

Stars in our galaxy move far from home

TOPICS: MILKY WAY, STARS

The Real Reality Show: Is Pluto a Planet?

TOPICS: PLUTO

September 2015: Multiverses — science or science fiction?

Observing Basics

Observing Basics: Filters

TOPICS: FILTER, OBSERVING

The Real Reality Show: Why Do Nebulae Glow?

TOPICS: SPACE PHYSICS,EMISSION NEBULAE,PLANETARY NEBULAE

Pluto: The "other" red planet

TOPICS: SOLAR SYSTEM,PLUTO, NEW HORIZONS

The Real Reality Show: Do We Really Know that the Big Bang Happened?

TOPICS: BIG BANG

New Horizons sees Pluto’s “bright fringe,” Charon’s “dark pole”

TOPICS: PLUTO, CHARON, NEW HORIZONS

Field of view indicators

TOPICS: ASTROIMAGING

August 2015: Hunt the cosmic glow

New supercomputer model shows planet-making waves in nearby debris disk

TOPICS: EXOPLANETS, STARS

The Real Reality Show: How Many Black Holes are in the Universe?

TOPICS: BLACK HOLES

Exoplanet smaller than Earth gets its size and mass measured

TOPICS: EXOPLANETS

Different faces of Pluto emerging in new images from New Horizons

TOPICS: SOLAR SYSTEM,PLUTO, NEW HORIZONS

Fly over Ceres in new video

TOPICS: SOLAR SYSTEM,CERES, DAWN, DWARF PLANETS

The Real Reality Show: What is Dark Matter?

TOPICS: DARK MATTER

Seasonal Observing

Easy-to-Find Objects in the 2015 Summer Sky

TOPICS: JUPITER, VENUS,SATURN, METEOR SHOWER,CONSTELLATION OBSERVING

Summer Observing Targets for Small Telescopes

TOPICS: DEEP-SKY OBSERVING

Summer Observing Targets for Large Telescopes

TOPICS: DEEP-SKY OBSERVING

July 2015: The inside story of Pluto

The Real Reality Show: Do Other Universes Exist?

TOPICS: MULTIVERSE

The Real Reality Show: The End of Life on Earth

TOPICS: LIFE, EARTH

Cosmic Adventures

Episode 25: Stupid Names in Astronomy

NASA completes MESSENGER mission with impact on Mercury's surface

TOPICS: SOLAR SYSTEM,MERCURY, MESSENGER

MESSENGER mission to impact Mercury today

TOPICS: SOLAR SYSTEM,MERCURY, MESSENGER

The Real Reality Show: How the Sun Will Die

TOPICS: SUN, PLANETARY NEBULAE

June 2015: Apollo 13’s Jim Lovell in his own words

NASA unveils celestial fireworks as official image for Hubble 25th anniversary

TOPICS: STARS, HUBBLE TELESCOPE

The Real Reality Show: Is Interstellar Travel Really Possible?

TOPICS: STARS, SPACE FLIGHT

Astronomy 101

Astronomy 101: The Sun

TOPICS: SUN

May 2015: Mysterious brown dwarfs

The Real Reality Show: How Many Stars Exist in the Universe?

TOPICS: STARS

The Real Reality Show: What Happened to the Water on Mars?

TOPICS: MARS, WATER

The Real Reality Show: Let's Cut the UFO Crap

TOPICS: LIFE,EXTRATERRESTRIALS

NASA spacecraft nears historic dwarf planet arrival

TOPICS: SOLAR SYSTEM,CERES, DAWN, DWARF PLANETS

Seasonal Observing

Observing springtime deep-sky objects with a large telescope

TOPICS: OBSERVING, DEEP-SKY OBSERVING

Seasonal Observing

Springtime observing for small telescopes

TOPICS: OBSERVING, STARS AND STAR CLUSTERS,GALAXIES

April 2015: The Hubble Space Telescope's 25th anniversary

The Real Reality Show: Could you Really Travel Through a Black Hole?

TOPICS: BLACK HOLES

ALMA sees super stellar nurseries at heart of Sculptor Galaxy

TOPICS: GALAXIES, STARS,STAR FORMATION, STARBURST,ALMA

The Real Reality Show: Why Asteroids Should Be Taken Seriously

TOPICS: ASTEROIDS

Black hole chokes on a swallowed star

TOPICS: BLACK HOLES, STARS

March 2015: The 500 Coolest Things about Space

Dawn delivers new image of Ceres

TOPICS: SOLAR SYSTEM,CERES, DAWN, DWARF PLANETS

Asteroid to fly by Earth safely January 26

TOPICS: SOLAR SYSTEM, NEAR EARTH OBJECTS, ASTEROIDS

Hubble's high-definition panoramic view of the Andromeda Galaxy

TOPICS: GALAXIES,ANDROMEDA GALAXY, HUBBLE TELESCOPE

Smashing results about our nearby galactic neighbors

TOPICS: GALAXIES, LARGE MAGELLANIC CLOUD, SMALL MAGELLANIC CLOUD

Product Showcase: Celestron's NexStar Evolution series

TOPICS: CELESTRON,TELESCOPES, LARGE (8 INCHES OR LARGER), MEDIUM (4 TO 8 INCHES), SCHMIDT CASSEGRAIN

February 2015: NASA sets its sights on Pluto

Astronomers identify gas spirals as a nursery of twin stars through ALMA observation

TOPICS: STARS, BINARY STARS,MOLECULAR CLOUD, ALMA

NASA’s new Orion spacecraft completes first spaceflight test

TOPICS: SPACE FLIGHT, ORION

Successful launch of Orion heralds first step on journey to Mars

TOPICS: SPACE FLIGHT, ORION

Winter observing targets for small telescopes

TOPICS: DEEP-SKY OBSERVING,GALAXIES

Seasonal Observing

Winter observing targets for large telescopes

TOPICS: DEEP-SKY OBSERVING,GALAXIES, NEBULAE

January 2015: Top 10 space stories of 2014

Swift mission probes an exotic object

TOPICS: BLACK HOLES, SWIFT,SPACE PHYSICS

Live Coverage: Rosetta mission Philae comet touchdown

TOPICS: SOLAR SYSTEM,COMETS, COMET 67P, ROSETTA

Rosetta readies for lander's comet touchdown

TOPICS: SOLAR SYSTEM,COMET, COMET 67P, ROSETTA

Rocket experiment finds the universe brighter than we thought

TOPICS: INFRARED,COSMOLOGY

Mars spacecraft reveal comet flyby effects on martian atmosphere

TOPICS: COMETS, COMET SIDING SPRING, MARS, SOLAR SYSTEM

How a giant impact formed Vesta’s “belt”

TOPICS: SOLAR SYSTEM,VESTA, ASTEROIDS

The VLT Survey Telescope images the Lagoon Nebula

TOPICS: SOLAR SYSTEM,NEBULAE, STARS

ESA prepares to wake up comet-bound spacecraft

TOPICS: SPACECRAFT & LAUNCHES, COMETS, SOLAR SYSTEM, COMETS, ROSETTA

Six-year search with HARPS finds three new planets in M67

TOPICS: EXOPLANETS, STAR CLUSTERS

Fermi makes first gamma-ray study of a gravitational lens

TOPICS: SPACE PHYSICS,GRAVITATIONAL LENSING,BLAZARS

February 2014: Explore Titan’s strange rivers

Mars Express heading toward daring flyby of Phobos

TOPICS: SOLAR SYSTEM, ESA,MARS EXPRESS, PHOBOS

Liftoff for the European Space Agency's billion-star surveyor

TOPICS: SPACE FLIGHT, MILKY WAY

RS Puppis puts on a spectacular light show

TOPICS: STARS, VARIABLE STARS

Herschel spies active argon in Crab Nebula

TOPICS: HERSCHEL, SPACE PHYSICS, ASTROCHEMISTRY

Cosmic Adventures

Episode 22: Gravitational waves

TOPICS: GRAVITATIONAL WAVES

Juno gives starship-like view of Earth flyby

TOPICS: SPACE EXPLORATION,JUNO, SOLAR SYSTEM

Astronomy 101

Astronomy 101: Chemistry in space

TOPICS: SPECTRA,ASTROCHEMISTRY

Cassini spacecraft obtains best views of Saturn hexagon

TOPICS: SOLAR SYSTEM,SATURN, CASSINI

European Space Agency decides on next large mission concepts

TOPICS: SPACE PHYSICS, ESA

January 2014: Count down the top 10 space stories of the year

Comet ISON may have survived

TOPICS: COMET, COMET ISON

IceCube pushes neutrinos to the forefront of astronomy

TOPICS: COSMOLOGY,NEUTRINOS

Missions study “watershed” cosmic explosion in unparalleled detail

TOPICS: SPACE PHYSICS,GAMMA-RAY BURSTS

NASA launches mission to study upper atmosphere of Mars

TOPICS: SPACE FLIGHT, MARS,SOLAR SYSTEM, MAVEN

Observe Comet ISON at its best

TOPICS: COMET ISON, COMETS

A glimpse of the violent past of Milky Way’s giant black hole

TOPICS: BLACK HOLES, MILKY WAY

December 2013:Astronomy explores how math drives the universe

Observing Basics

Observing Basics: Tips for Moon Watchers

TOPICS: MOON, LUNAR OBSERVING

Juno spacecraft resumes full flight operations on its way to Jupiter

TOPICS: SPACE FLIGHT, JUNO,JUPITER

December 2014: Five stars that could go bang!

Orbital Sciences unmanned space station mission explodes at liftoff

TOPICS: SPACE FLIGHT,ORBITAL SCIENCES

Study claims Milky Way dark matter half what scientists thought

TOPICS: MILKY WAY, DARK MATTER

Astronomy 101

Astronomy 101: Cosmic Rays

TOPICS: COSMIC RAYS

Web Extra: Ripples in space

TOPICS: COSMOLOGY

Using masks, part 1

TOPICS: ASTROIMAGING

November 2014: Rosetta explores a comet up close

New observations explain why Milky Way-like galaxies are so common

TOPICS: GALAXY MERGERS,GALAXIES

NASA chooses American companies to transport U.S. astronauts to space station

TOPICS: SPACE FLIGHT

The Real Reality Show: Black Hole Facts

TOPICS: BLACK HOLES

Watch coverage of a significant flare surging off the Sun

TOPICS: SOLAR SYSTEM, SOLAR FLARES, SUN

Newly identified galactic supercluster is home to the Milky Way

TOPICS: MILKY WAY, GALAXY CLUSTERS

Seasonal Observing

Autumn observing targets for small telescopes

TOPICS: DEEP-SKY OBSERVING,GALAXIES, NEBULAE

Seasonal Observing

Autumn observing targets for large telescopes

TOPICS: GALAXIES, DEEP-SKY OBSERVING, NEBULAE

October 2014: Everything you know about black holes might be wrong!

Proper luminance

TOPICS: ASTROIMAGING

How to Safely Observe the Sun

TOPICS: SUN, SAFETY

Dark Energy Survey kicks off second season cataloging the wonders of deep space

TOPICS: SPACE PHYSICS, DARK ENERGY

ALMA confirms comets forge organic molecules in their dusty atmospheres

TOPICS: SOLAR SYSTEM,COMETS, COMET ISON, COMET LEMMON

Venus Express: Up above the clouds so high

TOPICS: SOLAR SYSTEM, VENUS EXPRESS, VENUS

Gaia: “Go” for science

TOPICS: SPACE FLIGHT, MILKY WAY

NASA-funded X-ray instrument settles interstellar debate

TOPICS: SOLAR SYSTEM, MILKY WAY, X-RAYS

Double color

TOPICS: ASTROIMAGING

September 2014: The future of astronomy

The Real Reality Show: The Cosmic Distance Scale

TOPICS: SOLAR SYSTEM,DWARF PLANETS, ASTEROIDS,METEORITES

First sightings of solar flare phenomena confirm 3-D models of space weather

TOPICS: SOLAR FLARES, SOLAR SYSTEM, SPACE WEATHER

Asteroid Chariklo found to have two rings

TOPICS: SOLAR SYSTEM,ASTEROIDS, ESO

Cosmic Adventures

Episode 23: Animals Launched into Space

TOPICS: SPACE FLIGHT

Space sunflower may help snap pictures of planets

TOPICS: EXOPLANETS, PLANET FORMATION

May 2014: Inside a monster galaxy

The Real Reality Show: March Headlines

TOPICS: GRAVITATIONAL WAVES, BIG BANG, COSMOS

Fierce 2012 magnetic storm barely missed Earth

TOPICS: SOLAR SYSTEM, SOLAR FLARES, SUN

Simulating how Earth kick-started metabolism

TOPICS: COSMOLOGY

ESO’s Very Large Telescope spots largest yellow hypergiant star

TOPICS: STARS, DOUBLE STARS

Hubble witnesses an asteroid mysteriously disintegrating

TOPICS: SOLAR SYSTEM,ASTEROIDS, HUBBLE TELESCOPE

Spiral galaxy spills blood and guts

TOPICS: GALAXIES, SPIRAL GALAXIES, GALAXY CLUSTERS

With a deadly embrace, “spidery” pulsars consume their mates

TOPICS: SPACE PHYSICS,PULSARS, NEUTRON STARS,FERMI

April 2014: The missing universe

Astronomers find solar storms behave like supernovae

TOPICS: SOLAR SYSTEM, SOLAR FLARES, SUN, CMES

Spacecraft get a 360° view of Saturn’s aurorae

TOPICS: SOLAR SYSTEM,SATURN, CASSINI, HUBBLE

Observing Basics

Observing Basics: Power in the Field

TOPICS: OBSERVING,ACCESSORIES

Video recaps Solar Dynamics Observatory's year four

TOPICS: SOLAR SYSTEM, SOLAR FLARES, SUN

Astronomy 101

Astronomy 101: Brown Dwarfs

TOPICS: BROWN DWARFS

The anatomy of an asteroid

TOPICS: ASTEROIDS, SOLAR SYSTEM

Compelling contrast

TOPICS: ASTROIMAGING

Will humans journey to an asteroid?

TOPICS: ASTEROIDS, SPACE FLIGHT

March 2014: What space rocks tell us about the universe

ALMA discovers a formation site of a giant planetary system

TOPICS: EXOPLANETS, PLANET FORMATION

Fermi finds a “transformer” pulsar

TOPICS: STARS, NEUTRON STARS, PULSARS, BINARY STARS

Cosmic Adventures

Episode 24: How to Get Involved in Astronomy Stuff

TOPICS: CITIZEN SCIENCE

The Real Reality Show: The Big Bang

TOPICS: COSMOLOGY, BIG BANG

Observing Basics

Observing Basics: Your Eyes & Observing

TOPICS: OBSERVING,ACCESSORIES

August 2014: 45th Moon Landing Anniversary Exclusive

Observe the Moon Through Binoculars

TOPICS: MOON, LUNAR OBSERVING, BINOCULAR OBSERVING

Astronomers use Hubble to study bursts of star formation in the dwarf galaxies of the early universe

TOPICS: SPACE PHYSICS, STAR FORMATION, HUBBLE TELESCOPE, DWARF GALAXIES,STARBURST

Dwarf galaxies don’t fit standard model

TOPICS: GALAXIES, DWARF GALAXIES, ANDROMEDA GALAXY, GALAXY EVOLUTION

Giant telescopes pair up to image near-Earth asteroid

TOPICS: SOLAR SYSTEM,ASTEROIDS

The Real Reality Show: Scientific Thinking

TOPICS: SCIENTIFIC METHOD

Mercury passes in front of the Sun, as seen from Mars

TOPICS: SOLAR SYSTEM,MERCURY, MARS, TRANSITS

Black hole "batteries" keep blazars going and going

TOPICS: BLACK HOLES,BLAZARS, GALAXIES

Astronomers discover ancient worlds next door

TOPICS: EXOPLANETS

July 2014: Life inside a globular cluster

Analyzing Sun-like stars that eat Earth-like planets

TOPICS: SPACE PHYSICS,PLANET FORMATION

The Real Reality Show: The Rock Life

TOPICS: LIFE, MINERALS

Venus Express gets ready to take the plunge

TOPICS: SOLAR SYSTEM, VENUS EXPRESS, VENUS, ESA

Telescopes coordinate best-ever flare observations

TOPICS: SOLAR SYSTEM, SOLAR FLARES, SUN

Astronomers create first realistic virtual universe

TOPICS: COSMOLOGY, GALAXY EVOLUTION

The Real Reality Show: Our Sun's Fate

TOPICS: LIFE, SUN, EARTH

Astronomers harness the galaxy’s biggest telescope to make most precise measurement of spinning star

TOPICS: SPACE PHYSICS,NEUTRON STARS, PULSARS,INTERSTELLAR MATTER

Astronomy 101

Astronomy 101: The Milky Way

TOPICS: MILKY WAY

June 2014: Weird moons of the solar system

The Real Reality Show: Planet Pluto

TOPICS: SOLAR SYSTEM, PLUTO

Astronomy 101

Astronomy 101: Planets

TOPICS: SOLAR SYSTEM

Cosmic Adventures

Episode 12: The search for extraterrestrial intelligence

TOPICS: EXTRATERRESTRIALS

Observing Basics

Observing Basics: Buying Binoculars

TOPICS: OBSERVING,BINOCULAR OBSERVING,BINOCULARS

Cosmic Adventures

Episode 11: Astro-themed foods

Astronomy 101

Astronomy 101: Supernovae

Cosmic Adventures

Episode 10: Top 10 reasons Einstein is awesome

Cosmic Adventures

Episode 9: Getting into observing

Tour the Solar System

Tour the solar system: Comets

Astronomy 101

Astronomy 101: Neutron stars

Tour the Solar System

Tour the solar system: Asteroids

Cosmic Adventures

Episode 8: Astronomy tech: How telescopes work

Cosmic Adventures

Episode 7: HowAstronomy (magazine) happens

Cosmic Adventures

Episode 6: The stellar family

Tour the Solar System

Tour the solar system: Neptune

Astronomy 101

Astronomy 101: Nebulae

Cosmic Adventures

Episode 5: The great space debate

Tour the Solar System

Tour the solar system: Uranus

Tour the Solar System

Tour the solar system: Saturn

Cosmic Adventures

Episode 4: You can try this at home — cosmic expansion

Cosmic Adventures

Episode 3: When astronomy gets awkward

Tour the Solar System

Tour the solar system: Jupiter

Astronomy 101

Astronomy 101: Galaxies

Tour the Solar System

Tour the solar system: The Moon

Cosmic Adventures

Episode 2: Extrasolar planets

Cosmic Adventures

Episode 1: 10 reasons astronomy is awesome

Tour the Solar System

Tour the solar system: Mars

Tour the Solar System

Tour the solar system: The Sun

Tour the Solar System

Tour the solar system: Venus

Tour the Solar System

Tour the solar system: Mercury

Tour the Solar System

Tour the solar system: Earth

Observe the Moon with a small telescope

TOPICS: MOON

How to observe a lunar eclipse

TOPICS: LUNAR ECLIPSE

How to observe meteor showers

TOPICS: METEOR SHOWER

Astronomy 101

Cosmology 101: Dark Energy

Astronomy 101

Astronomy 101: Black holes

Astronomy 101

Cosmology 101: Dark matter

Astronomy 101

Cosmology 101: Big Bang

Astronomy 101

Astronomy 101

Cosmic Adventures

Cosmic Adventures

Dave's Universe

Daves Universe

Issue Previews

Issue Previews

Observing Basics

Observing Basics

Seasonal Observing

Seasonal Observing

Tour the Solar System

Tour the Solar System

The Real Reality Show

Cassini spacecraft finds ingredient of household plastic in space

TOPICS: SOLAR SYSTEM, TITAN,SATURN, CASSINI

Dave's Universe

Comet ISON: The real story

TOPICS: COMET, COMET ISON

Watch a Comet 103P/Hartley flyby

TOPICS: COMETS

November 2013: Comet ISON blazes into glory

TOPICS: COMET, COMET ISON

Cygnus en route for Sunday rendezvous with space station

TOPICS: SPACE FLIGHT,ORBITAL SCIENCES

Telescopes create 3-D map of Milky Way's central bulge

TOPICS: MILKY WAY

October 2013: Top 10 exoplanets

Astronomy 101

Astronomy 101: Quasars and other AGNs

TOPICS: QUASARS, BLAZARS,BLACK HOLES

Observing Basics

Observing Basics: What's in Your Observing Kit?

TOPICS: OBSERVING,ACCESSORIES

September 2013: Solar storm warning

August 2013: Special 40th anniversary issue

Swift produces best ultraviolet maps of the nearest galaxies

TOPICS: GALAXIES, LARGE MAGELLANIC CLOUD, SMALL MAGELLANIC CLOUD

July 2013: Secrets of the brightest objects in the universe

Cosmic Adventures

Episode 21: The dark universe

TOPICS: DARK MATTER, DARK ENERGY

Astronomy 101

Astronomy 101: Gamma-ray bursts

TOPICS: GAMMA-RAY BURSTS

June 2013: Historic Russian meteorite fall

Observing Basics

Observing Basics: Dealing with Dew

TOPICS: OBSERVING,ACCESSORIES

May 2013: How life survived an early faint Sun

Cosmic Adventures

Episode 20: 10 big changes in astronomy

April 2013: Skyfire — The impending birth of our supergalaxy

Astronomy 101

Astronomy 101: Cosmic microwave background

TOPICS: COSMIC MICROWAVE BACKGROUND, COSMOLOGY

March 2013: A big eye on the violent universe

Observing Basics

Observing Basics: Distances in Space

TOPICS: OBSERVING

February 2013: When stars go bang!

Astronomy 101

Astronomy 101: Kepler's laws

January 2013: Top 10 space stories of 2012

December 2012: Curiosity’s first days on Mars

Cosmic Adventures

Episode 19: The end of the world (myths)

Observing Basics

Observing Basics: Finder Scopes

TOPICS: OBSERVING,ACCESSORIES

November 2012: Understanding planet Earth

October 2012: 100 Greatest Pictures of the Universe

Cosmic Adventures

Episode 18: Black holes

Astronomy 101

Astronomy 101: Astronomical distances

Observing Basics

Observing Basics: Eyepieces

TOPICS: OBSERVING,EYEPIECES, ACCESSORIES

Dave's Universe

Dave's Universe: Your theory, my theory

Cosmic Adventures

Episode 17: European astronomy

Dave's Universe

Astronomy's new frontier, part 1

Dave's Universe

Astronomy's new frontier, part 2

Dave's Universe

Astronomy's new frontier, part 3

Dave's Universe

Astronomy's new frontier, part 4

Dave's Universe

Astronomy's new frontier, part 5

Astronomy 101

Astronomy 101: Stars

Cosmic Adventures

Episode 16: Letters from viewers

Dave's Universe

Dave's Universe: Truth and science

Cosmic Adventures

Episode 15: The lives of the stars

Observing Basics

Observing Basics: Visual Solar Filters

TOPICS: OBSERVING

Cosmic Adventures

Episode 14: Animals in the stars

Cosmic Adventures

Episode 13: The speed of light

TOPICS: SPACE PHYSICS

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