New Hubble Photos!!!!
This celestial object - NGC 6302 - looks like a delicate butterfly but is far from serene: What resemble dainty butterfly wings are actually boiling cauldrons of gas heated to more than 36,000 degrees Fahrenheit
Stars bursting to life in chaotic Carina Nebula: These two images of a huge pillar of star birth demonstrate how observations taken in visible and in infrared light by NASA's Hubble Space Telescope reveal dramatically different views
Stephan's Quintet: A clash among members of a famous galaxy quintet reveals an assortment of stars across a wide colour range, from young, blue stars to aging, red stars. Stephan’s Quintet, also known as Hickson Compact Group 92, as the name implies, is a group of five galaxies
Omega Centauri: NASA's Hubble Space Telescope snapped this view of a colourful assortment of 100,000 stars residing in the crowded core of a giant star cluster. The image reveals a small region inside the globular cluster Omega Centauri, which boasts nearly 10 million stars
Barred Spiral Galaxy NGC 6217: This image is the first of a celestial object taken with the newly repaired Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope
Gravitational Lensing in Galaxy Cluster Abell 370: The Hubble Space Telescope's ACS has peered nearly 5 billion light-years away to reveal intricate details in this galaxy cluster
VIDEO
Watch a great video which zooms in to a nebula to show the depth in these photos
andylloyd
Eric Harrington
Jolene Rae Harrington
ravingliberal
Where Conspiracy and Reality Collide 
Splitting hairs, I know, but “we have not detected”, I believe, would be more appropriate. “Receive” presupposes purposeful “sending”.
Nonetheless, an excellent point — one that’s open to all sorts of explanations, including your on musings re alternative wave propagation theories, modalities — even inter-dimensional anomalies of which we’re unaware. To that I would add my own in wondering whether RF transmission (as opposed to the obviously universally extant RF spectrum) is the universal sine qua non of ‘civilization’ that we assume it to be. I, personally, believe there could be many other communicational ‘media’ altogether unfamiliar to us — including brainwaves, telepathy, remote viewing, amongst more advanced civilizations who might deem the act of exciting a crystal tantamount to striking a flint. Not too farfetched, to my thinking.