Dr. Knight

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Jet Lag Is Worse on Mars

A Martian day is 40 minutes longer than a day on Earth—a seemingly small difference that adds up quickly.<p>What would you do with an extra 40 minutes in a day?<p>Not 40 minutes shaved off some regular daily activity to devote to something else, but an extra 40 minutes actually tacked on to the 24 hours …

Amusing World

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APOD: NGC 7023: The Iris Nebula (2014 Aug 02) Image Credit & Copyright: Jimmy Walker http://apod.nasa.gov/apod/ap140802.html Explanation: These clouds of interstellar dust and gas have blossomed 1,300 light-years away in the fertile star fields of the constellation Cepheus. Sometimes called the Iris Nebula, NGC 7023 is not the only nebula in the sky to evoke the imagery of flowers, though. Still, this deep telescopic view shows off the Iris Nebula's range of colors and symmetries in impressive detail. Within the Iris, dusty nebular material surrounds a hot, young star. The dominant color of the brighter reflection nebula is blue, characteristic of dust grains reflecting starlight. Central filaments of the dusty clouds glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs. The pretty blue petals of the Iris Nebula span about six light-years. http://jwalk.smugmug.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140802 #APOD

Make a Biogas Generator to Produce Your Own Natural Gas - Renewable Energy

You can use many household organic “waste” materials to produce your own natural gas for cooking, lighting, and space and water heating. This gas, …

How to Keep Mosquitoes Away - Nature and Environment

<i>Learn how to keep mosquitoes away with these handy suggestions to repel mosquitoes before they attack.</i><p>Humans have been taking aim at mosquitoes since …

How to Build a Passive Solar Water Heater - Green Homes

<i>Follow these guidelines to build an easy and affordable solar hot water heater. Explore the various types of solar water heaters. Learn how a passive</i> …

Makoto Azuma Uses the Stratosphere as a Backdrop For His Latest Floral Art | Colossal

<p>Last week Japanese botanic artist Makoto Azuma attempted to go where most artists only dream of going: to space. In a project titled Exbiotanica, …

How to Tell a Great Story

We tell stories to our coworkers and peers all the time — to persuade someone to support our project, to explain to an employee how he might improve, or to inspire a team that is facing challenges. It’s an essential skill, but what makes a compelling story in a business context? And how can you …

APOD: A Sky Portal in New Zealand (2014 Jul 29) Image Credit & Copyright: Petr Horálek http://apod.nasa.gov/apod/ap140729.html Explanation: To some, it may look like a portal into the distant universe. To others, it may appear as the eye of a giant. Given poetic license, both are correct. Pictured above is a standard fisheye view of the sky -- but with an unusual projection. The view is from a perch in New Zealand called Te Mata Peak, a name that translates from the Maori language as "Sleeping Giant". The wondrous panorama shows the band of our Milky Way Galaxy right down the center of the sky, with the Large and Small Magellanic Clouds visible to the right. The red hue is atmospheric airglow that surprised the photographer as it was better captured by the camera than the eye. The above image was taken two weeks ago as the photographer's sister, on the left, and an acquaintance peered into the sky portal. http://www.astronom.cz/horalek/ http://www.facebook.com/imaginer21 Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140729 #APOD