Posts Tagged ‘astronomy’

UV Earth

January 5, 2014 2 comments



Here’s an eye-catcher to start the year with: the Earth, taken in ultraviolet light from the surface of the Moon. Open your eyes, folks…   RT


Photo: Earth in Ultraviolet Light from the Moon’s Surface. NASA. Public Domain.


Martian Dunes–Fantasy Follows Nature

September 18, 2013 Leave a comment

Several types of downhill flow features have been observed on Mars. This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter is an example of a type called 'linear gullies.'

Raw experience forms the playing blocks of our dreams. RT wouldn’t say that our exploration of space is changing the nature of beauty, but it might be broadening our conception of what’s possible…   RT


Photo: Linear Gullies; NASA, HiRISE Camera, Mars Reconnaissance Orbiter, June 13, 2013. NASA web site; Public Domain.



Voyager 1 Enters Interstellar Space!

September 14, 2013 5 comments



NASA has confirmed it: launched in 1977, Voyager 1 entered interstellar space in August 2012. Another giant leap for mankind…  RT


Photo: Voyager 1; NASA. WikiCmns; Public Domain.

Cygnus Loop Supernova

August 31, 2013 7 comments

File:Cygnus Loop Supernova Blast Wave - GPN-2000-000992.jpg


Whoa, what happened here? Five to ten thousand years ago, a massive star exploded, sending out shock-waves in all directions, creating the Cygnus Loop. The blast shell is currently expanding at 370,000 mph and emits energy across the electromagnetic spectrum: radio, visible, x-ray, and ultra-violet. Some of the ejecta material, however, is travelling faster: the violet streak of light near the top of the image marks the path of a knot of gases moving at nearly 3 million mph. This image is a combination of three photographs: one capturing green light (hydrogen atoms), one, blue light (oxygen atoms); and the last, red light (sulfur atoms). 

The visible part of the Swan Loop is called the Veil Nebula, and was discovered by William Herschel in 1784.


RT’s Related Posts: 1) Guest Star.


Photo: Cygnus Loop Supernova Blast Wave (1993); Hubble Space Telescope. Author: NASA, J.J. Hester Arizona State University. WikiCmns; Public Domain.

Transit of Venus

August 15, 2013 2 comments


This high-definition photo of Venus transiting the Sun (taken in 2012) speaks directly to our awe at the powers of nature and the universe. The next transit will occur in 2117; who knows where space exploration will be by that point?   RT

Photo: SDO’s Ultra-High Definition View of Venus 2012 Transit (NASA/SDO, AIA). WikiCmns; CC 2.0 Generic.


Lunar Spiral Cycle

File:Zeusandhera - Lunar Spiral Cycle (by-sa).jpg


Wow!     RT

Photo: Zeusandhera–Lunar Spiral Cycle (20 February 2008, 23:27). Author: Alex Gorzen. WikiCmns; CC 2.0 Generic.


Enceladus & Saturn’s Ring Shadows

June 15, 2013 1 comment

File:Enceladus backdropped by ring shadows on Saturn.jpg

as the summer comes in, something beautiful from a cool location… RT

PhotoRing shadows line the face of distant Saturn, providing a backdrop for the brilliant, white sphere of Enceladus. Captured by Cassini space probe, 28 June 2007. NASA; Public Domain.