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  • Have you ever thought about how nice it would be to travel back in time to repair bad choices? Perhaps you've dreamed of seeing someone from your past? According to scientists time travel is possible.

    Time Travel Is a Possibility

    Time Travel Is a Possibility

    by Betty A F7

  • The Earth has an exceptionally large moon compared to the size of other planets' moons. Start exploring the celestial sphere by observing our beautiful natural satellite.

    Astronomy for Beginners: Observing the Moon

    Astronomy for Beginners: Observing the Moon

    by Marco0

  • The study of exoplanets is a relatively new field of astronomy. There are four main methods used by astronomers to discover new exoplanets: direct imaging, the radial velocity method, astrometry and gravitational microlensing.

    Exoplanet Detection Techniques: How to Find a Planet

    Exoplanet Detection Techniques: How to Find a Planet

    by Sam Brind0

  • The constellation Virgo is one of the oldest-named constellations. It has a great mythological history and hundreds of galaxies and "Messier" objects within its boundaries. Find out more about the "Diamond of Virgo" and the "Field of the Nebulae."

    The Constellation Virgo—Mythology, Stars, and More

    The Constellation Virgo—Mythology, Stars, and More

    by Cynthia Calhoun27

  • Universe is an amazing place, full of stars, planets and what not. Today we're looking up at 5 amazing stars of the universe.

    Top 5 Most Interesting Stars

    Top 5 Most Interesting Stars

    by Sneha Sunny5

  • Did an “Intelligent Designer” fine-tune the universe to make it just right for human life? No! Just the opposite. Evolution has fine tuned life to fit the universe.

    Is the Universe Fine-Tuned for Human Life?

    Is the Universe Fine-Tuned for Human Life?

    by Catherine Giordano24

  • How to explore the night sky the old way by using star charts instead of computer softwares. You will enjoy this fascinating hobby more by using the traditional method to find important stars.

    How to Find Stars Using Astronomy Star Charts

    How to Find Stars Using Astronomy Star Charts

    by Melvin Porter4

  • Bored with the 9, I mean 8, planets? Looking for some REAL cosmic fun? Well check out the moons of the Solar System in which you reside!! There are a lot of interesting tidbits...

    Top 10 Most Interesting Moons in the Solar System

    Top 10 Most Interesting Moons in the Solar System

    by Blake Atkinson13

  • Dark matter is currently an unsolved problem within physics. What dark matter is made up of is a complete mystery. How do scientists know that dark matter really exists?

    Is There Proof of Dark Matter?

    Is There Proof of Dark Matter?

    by Sam Brind3

  • This is a basic guide to what you can see on the surface on the Moon - there is as much that can be seen on the Moon with a pair of binoculars, than in the whole of the rest of the sky put together.

    Astronomy - A Beginner's Guide to the Moon

    Astronomy - A Beginner's Guide to the Moon

    by Greensleeves Hubs15

  • A solar eclipse occurs about once every 18 months somewhere on Earth. Because of the dark shadow that is cast across our planet, much myth and superstition surrounds these naturally occurring events.

    The Myth and Reality of Eclipses

    The Myth and Reality of Eclipses

    by Harry Nielsen0

  • These distances are measured in degrees and radians. The angular diameters of these objects are normally very small; therefore, it is better to represent them in degrees, arcminutes and arcseconds.

    How to Measure the Angular Size of the Big Dipper

    How to Measure the Angular Size of the Big Dipper

    by Jose Juan Gutierrez0

  • This is the third page in a series of guides for anyone who wants to learn a little more about our night sky. This page looks at those most numerous of all objects visible in the night sky - the stars

    Astronomy—A Beginner's Guide to the Stars

    Astronomy—A Beginner's Guide to the Stars

    by Greensleeves Hubs10

  • The first of four basic guides to the night sky, and what can be seen with the naked eye or binoculars. This page identifies the many kinds of objects you can see when you look up at the night sky

    Astronomy—A Beginner's Guide to the Night Sky

    Astronomy—A Beginner's Guide to the Night Sky

    by Greensleeves Hubs32

  • Over the past several decades there has been increased speculation that a supermoon may in some way effect the onset of an earthquake. Recent events in New Zealand have only added to this speculation.

    Supermoons and Earthquakes: Is There a Connection?

    Supermoons and Earthquakes: Is There a Connection?

    by Harry Nielsen0

  • Though it may be hard to imagine a world without the moon, many have dared to wonder. What results from its absence has more profound effects than we could have known.

    What Would Earth Be Like Without the Moon?

    What Would Earth Be Like Without the Moon?

    by Leonard Kelley3

  • NASA and SpaceX plan to colonize Mars within the 21st century. They are preparing ships, cargo, and crew for an intergalactic voyage mid-2030. Here is everything you need to know about living on Mars.

    Everything You Need to Know About Colonizing Mars

    Everything You Need to Know About Colonizing Mars

    by JourneyHolm1

  • Though a thorough list of movies would go on forever, it is possible to look at the Hollywood approach to black holes and learn what they got right—and absolutely wrong.

    How Accurate Are Black Holes in Film?

    How Accurate Are Black Holes in Film?

    by Leonard Kelley0

  • Following the Apollo Space Program came the era of the Space Shuttle. After over 30 years of service to the United States including a total of 135 missions the Space Shuttle program officially ended on July 21st, 2011.

    Space Shuttle: End of an Era

    Space Shuttle: End of an Era

    by Bill De Giulio17

  • The magnification of a telescope can be improved by using extra optical devices. A Barlow lens and other hand-made devices will allow you to amplify the image seen through the telescope lens

    How to Increase the Magnification of a Telescope

    How to Increase the Magnification of a Telescope

    by Jose Juan Gutierrez0

  • A description of the role time plays in the birth, life, and death of the universe; a description of what exists beyond the universe boundary; the role of dark energy.

    The Evolution of Time

    The Evolution of Time

    by Daniel Earhart2

  • The dawning of Age of Aquarius is more than just a lyric from a 1970s musical. It is a very real astronomical phenomenon that will occur in the not too distant future. To understand when this new age will occur requires a bit of understanding of the constellations of the Zodiac, as well as the dynamics of Earth's orientation in the Solar System that cause the astrological age to change over time.

    When Is the Age of Aquarius?

    When Is the Age of Aquarius?

    by scottcgruber10

  • The act of observation changes the way we see the universe, but we try to understand it. As it evolves, change keeps occurring until everything is equal. Then time can no longer progress and it stops. When time stops, space becomes meaningless. Space can only exist throughout the passage of time.

    Observing the Evolution of Time and Space Since the Big Bang

    Observing the Evolution of Time and Space Since the Big Bang

    by Glenn Stok10

  • It was the decision that angered Pluto fans everywhere; even the ones who never realized their fondness for the small celestial body. The planet Pluto is dead. She's now officially a dwarf world.

    This is Why Pluto is no Longer a Planet

    This is Why Pluto is no Longer a Planet

    by Jana Louise Smit2

  • We've been watching the dramatic New Horizons flyby of Pluto over the past few weeks, and many people are saying, "Come on, REALLY. That's a PLANET!"

    So, Really, Isn't Pluto A Planet?

    So, Really, Isn't Pluto A Planet?

    by Ellen5

  • The astrolabe has been used by mariner's for centuries. Although its use has largely fallen by the wayside due the development of more sophisticated instruments such as telescopes and GPS, it is still an instrument worthy of study. Build your own simple astrolabe to determine your latitude as did the ancient sailors or use it in conjunction with trigonometry to determine the height of a very tall object!

    The Astrolabe: How to Make One and Understanding Its Use

    The Astrolabe: How to Make One and Understanding Its Use

    by Teresa Coppens17

  • This article summarizes the threat that asteroids and comets pose to the Earth. A short history of some of the greatest asteroid impacts on Earth is also provided.

    Will an Asteroid Strike Planet Earth?

    Will an Asteroid Strike Planet Earth?

    by Kelley43

  • Most of us expect galaxies to be filled with the light of thousands of millions of stars, but another type of galaxy is thought to exist – one that contains hardly any stars at all.

    The Mystery Within Dark Galaxies

    The Mystery Within Dark Galaxies

    by ianzonja0

  • This page is part of a series on America's first manned space program, Project Mercury. Links to all the hubs in this series can be found at the NASA Project Mercury Overview. On May 15, 1963, the final mission of NASA's Project Mercury was...

    NASA Project Mercury - Gordon Cooper and Faith 7

    NASA Project Mercury - Gordon Cooper and Faith 7

    by Glen Nunes1

  • Man has always been fascinated by the sky. Yet space exploration in earnest did not begin until the 20th century. A recap of man's remarkable achievements in search of new frontiers.

    10 Milestones of Space Exploration

    10 Milestones of Space Exploration

    by Marco1

  • This article suggests a list of the thirteen greatest airplanes of all time, emphasizing the importance of each during its time and place in world history.

    13 Best Airplanes of All Time

    13 Best Airplanes of All Time

    by Kelley40

  • Do you know the history of Leo the Lion? Can you locate it in the sky? Find out the answers to these questions and learn some interesting facts about this ancient constellation.

    Leo the Lion - Stars, Symbols and Myths

    Leo the Lion - Stars, Symbols and Myths

    by Cynthia Calhoun27

  • Learn the most tantalizing facts about this toxic, hellish world that's ironically known as Earth's sister planet!

    Top Ten Facts About Venus

    Top Ten Facts About Venus

    by Ashley Balzer8

  • So, there's a flat Earth society, a round Earth society, but why have we eliminated the possibility of the Hollow Earth?

    What Is the Hollow Earth Theory?

    What Is the Hollow Earth Theory?

    by Mark Walker Jr0

  • Though it lies 26,000 light years away, A* is the closest supermassive black hole to us. It is therefore our best tool in understanding how these complex objects work.

    Some Facts on Black Hole Sagittarius A*

    Some Facts on Black Hole Sagittarius A*

    by Leonard Kelley0

  • My attempt to satisfy the question 'Can Life Exist in the Sirius Star System'. I hope you find it educational and enjoyable as I did doing the research

    Can the Sirius Star System Support Life?

    Can the Sirius Star System Support Life?

    by Robin Olsen30

  • Here's another star, Mira the wonderful, which is literally the only shooting star out there. It has some really amazing qualities, and you'll know why it's name is so appropriate.

    Mira: The Only Real Shooting Star

    Mira: The Only Real Shooting Star

    by Sneha Sunny0

  • Based on present technology and the knowledge of the requirements for human survival, intergalactic travel is being considered among scientists as the endurance of humans in space is researched. Inhabiting Mars may be the next step, but can we go even farther?

    Can Humans Travel to and Inhabit Other Planets Besides Mars?

    Can Humans Travel to and Inhabit Other Planets Besides Mars?

    by Glenn Stok10

  • Nobody knows exactly where this probe is nowadays. NASA lost contact with it in 2003, ending a 30-year mission. But there's a milestone here, it's now the furthest derelict man-made object.

    Where Is Pioneer 10 Now?

    Where Is Pioneer 10 Now?

    by Jason Ponic1

  • This is part of a series on America's first manned space program, Project Mercury. It presents an overview of the program and provides links to the other pages in the series, which contain more information on specific topics.

    NASA Project Mercury - Overview

    NASA Project Mercury - Overview

    by Glen Nunes2

  • No matter if we look out toward the heavens, or if we look deep within atoms and molecules, we will find mostly empty space. I'll take you on an illustrative tour, both outward and inward, to explain why the universe and all matter is basically empty.

    Why the Universe Is Mostly Empty Space

    Why the Universe Is Mostly Empty Space

    by Glenn Stok6

  • The Geminids is an annual meteor shower and it's known as one of the most intense showers. There are usually anywhere from 80 to 120 meteors every hour in the sky and the peak occurs on December 13-14

    Geminids-Meteor Shower 2017

    Geminids-Meteor Shower 2017

    by Jose Juan Gutierrez0

  • When we look at the universe as a whole, we attempt to find anything that can be thought of as symmetrical. These clues reveal much about what is all around us.

    Is the Universe Symmetrical?

    Is the Universe Symmetrical?

    by Leonard Kelley0

  • A black hole is a region of spacetime centred on a point mass called a singularity. A black hole is extremely massive and thus has an immense gravitational pull, which is in fact strong enough to prevent light escaping from it.

    What is a Black Hole? Do Black Holes Even Exist?

    What is a Black Hole? Do Black Holes Even Exist?

    by Nesbyte34

  • Shooting stars are a meteorological and astronomical occurrence which can be quite beautiful to watch. If you're curious about what they are and where they come from, read on!

    What Is a Shooting Star?

    What Is a Shooting Star?

    by Becki Rizzuti5

  • Though no one knows for sure where the water on Earth came from, many look to comets for answers. But are we looking in the right place?

    Did Water on Earth Come From Comets?

    Did Water on Earth Come From Comets?

    by Leonard Kelley2

  • So many space missions are never realized because of finances, politics, or technical limitations. Galileo somehow faced all of these and came through with some amazing science on Jupiter.

    Galileo's Fight and Flight to Jupiter

    Galileo's Fight and Flight to Jupiter

    by Leonard Kelley2

  • There is a lot going on in the night sky. Take a look with a discerning eye and be amazed at the celestial entertainment above.

    Stars in the Winter Night Sky

    Stars in the Winter Night Sky

    by Tom Lohr2

  • Why is the sky at night dark if stars are everywhere? Read on to find out the surprising answer!

    What Is Obler's Paradox?

    What Is Obler's Paradox?

    by Leonard Kelley3

  • At the dawn of civilization, people worshiped the Sun as a divine being. Today, science has solved many of its mysteries. Here are ten fun, interesting and surprising facts about our nearest star.

    Top Ten Interesting and Fun Facts About the Sun

    Top Ten Interesting and Fun Facts About the Sun

    by Amanda Littlejohn20

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