History's first known periodic
From the Non-Chair
OMG! 2023!
Concellation® continues to be the place for fans to gather between conventions.
Conventions have returned! But Concellation remains your home between the cons!
LDN 673: Dark Clouds in Aquila
Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2...
Sunset, Moonset, Taj Mahal
APOD: 2022 October 27 - Sunset, Moonset, Taj Mahal Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a prof...
Seven Years of Halley Dust
History's first known periodic
Cocoon Nebula Wide Field
APOD: 2022 October 26 - Cocoon Nebula Wide Field Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a profes...
Sunset, Moonset, Taj Mahal
Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2...
Jupiter Rotates as Moons Orbit
APOD: 2022 October 25 - Jupiter Rotates as Moons Orbit Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a ...
Cocoon Nebula Wide Field
Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2...
Clouds Around Galaxy Andromeda
APOD: 2022 October 24 - Clouds Around Galaxy Andromeda Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a ...
Jupiter Rotates as Moons Orbit
Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. J...
