Tag: Exact Dates

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March 3, 2012

AAVSO Alert Notice 454: Monitoring of CH Cyg Requested for Chandra and HST Observations

AAVSO Alert Notice 454 Monitoring of CH Cyg Requested for Chandra and HST Observations March 2, 2012 Dr. Margarita Karovska, Harvard-Smithsonian Center for Astrophysics, has requested…

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August 20, 2011

AAVSO Alert Notice 445: Request for Monitoring of SS Cygni in Support of European VLBI Radio Observations

AAVSO Alert Notice 445 Request for monitoring of SS Cygni in support of European VLBI radio observations August 19, 2011 Following their very successful multiwavelength observing…

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July 27, 2009

AAVSO Alert Notice 399: Nightly Monitoring of AG Dra in Support of HST Calibration Observations

AAVSO Alert Notice 399: Nightly monitoring of AG Dra in support of HST calibration observations July 27, 2009 Edward Smith (STScI) has requested nightly photometric monitoring…

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Recommended Astronomy DVDs, Blu-Rays and 4K UHD Blu-Rays
Updated: January 14th, 2025. Stuck for something to watch on TV of an evening? Then why not load up an astronomy or […]
4-Billion-Year-Old Relic From the Early Solar System Is Headed This Way
NASA's Hubble Space Telescope has determined the size of the largest icy comet nucleus ever seen by astronomers. The […]
Hubble Space Telescope Finds the Most Distant Star Ever Seen
The NASA/ESA Hubble Space Telescope has established an extraordinary new benchmark: detecting the light of a star that […]
The Lessons Learned From a Simulated Asteroid Strike Over Europe
In an alternate reality playing out at this year’s international Planetary Defense Conference, a fictional asteroid […]
Teachers: Apply Now to the ESA Teach With Space Online Conference
Register now for ESA’s first-ever virtual teacher conference! Over the course of three days, from 6 to 8 July 2021, ESA […]
First Panoramic View of Mars at Perseverance Rover Landing Site
NASA’s Mars 2020 Perseverance rover got its first high-definition look around its new home in Jezero Crater on Feb. 21, […]
NASA’s Webb Telescope Will Show Us More Stars at Higher Resolution
...And Here’s What That Means for Astronomy... Early observations of stars in the local universe will pave the way for […]
Animations of NASA’s Mars 2020 Perseverance Rover Landing
This video depicts key events during entry, descent, and landing that will occur when NASA’s Perseverance rover lands […]
NASA Is Providing Spanish-Language Coverage for the Livestream of the December 14 Solar Eclipse
NASA will provide live coverage on Monday, Dec. 14, of a solar eclipse that will pass over South America, treating […]
NASA Names Artemis Team of Astronauts Eligible for Early Moon Missions
NASA has selected 18 astronauts from its corps to form the Artemis Team and help pave the way for the next astronaut […]

The Sun Now (Visible light)		The Sun Now (H-Alpha light)

Aurora Oval (Northern Hemisphere)		Aurora Oval (Southern Hemisphere)