solar system gas giant jupiter with moons

April Sky Talk | Seeing Jupiter’s Moons

Can Jupiter’s four bright satellites be seen without a telescope? Most skywatchers will respond by saying “That’s impossible.” But it actually is possible!

Starry sky and Orion constellation above birch forest in winter sky. Long exposure with ISO 2500. Moderate level of noise, color noise removed in raw-converter and in lab-mode without affect on details.

March Sky Talk | Winter Circlet Dominates Evening Sky

The stars of each of the four seasons are arranged in characteristic geometric patterns that make identifying them easy and fun. Here this month, in late winter, we find the most striking of them—the famed Winter Circlet!


February Sky Talk | What Can I See With My Telescope? – Part 2

As to what to look at, we’re extending last month’s roundup of solar system wonders to those of the deep-sky in “the great beyond.”

Space Launch System Flying Over The Clouds. 3D Scene.

From Space Shuttle to SpaceX: Reusable Rockets Will Change the World

“If one can figure out how to effectively reuse rockets just like airplanes, the cost of access to space will be reduced by as much as a factor of a hundred. A fully reusable vehicle has never been done before. That really is the fundamental breakthrough needed to revolutionize access to space.” — Elon Musk

Boys on a clear night looking thru a telescope

Check out this light box with other Astronaut/Space Images by Nashville Photographer, Dieter Spears, Owner of Inhaus Creative.


January SkyTalk | What Can I See With My Telescope? – Part 1

As an astronomy author and speaker, I’m often asked two questions: “What kind of telescope should I buy?” and “What can I see with it?” We’ve covered selecting a telescope in a past Sky Talk installment. As to what to look at, here beginning this month and continuing next month is a celestial roundup of both solar system and…


Einstein’s Theory of General Relativity Turns 100

Albert Einstein published his generalization of special relativity and Newton’s laws of gravitation in 1915, revolutionizing the way physicists understood space, time, gravity, energy, and their relationship to each other.

Arduino - Bringing Creative Programming to the Masses

Arduino: Bringing Creative Programming to the Masses

The Arduino microcontroller board makes it easy to learn and use computer programming language to create any electronics project you can dream of.

Taurid fireball descending in glowing aurora on November 9, 2015. 20,000-year-old Taurid meteor is said to be 20,000 years old.

December SkyTalk | A Repeat Performance

Last year’s annual Geminid Meteor Shower was as perfect as it can get, with its late evening peak viewing time and absence of moonlight to brighten the sky. Unfortunately, a lot of the country was…

Hubble Space Telescope

The Hubble Space Telescope’s 25th Anniversary

Showing the World the Beauty of Space Human beings have looked up into the night sky wondering what was up there since the very beginning. Stars and planets have captivated our imaginations, and seeing them through expertly designed telescopes for the complex objects they are has pushed the need for more. The atmosphere we live …


Bioluminescence: Shining a Light From Within

The natural world is a wondrous place, filled with creatures that live in almost any location and environment you can think of. Some of these organisms have a special capability which has entranced people for thousands of years. This ability, called bioluminescence, is a form of chemiluminescence, the production of light through a chemical reaction. …