Earth from the position of STEREO Ahead spreadsheet: http://dropcanvas.com/nhcs7 Astrometry of an old STEREO Ahead COR2 image gives us a more accurate figure for the angular resolution to go by (14.7 arcseconds per pixel instead of the rounded figure of 15), giving the spreadsheet an even better match to the actual images: http://nova.astrometry.net/user_images/566023#annotated The revised 14.7 figure is now used for the spreadsheet available in the first link. ... https://www.youtube.com/watch?v=LRJgbqy0vOA

Yes, it is still just Venus, and the math proves it. Venus coordinates spreadsheet (based on equations that go back to Simon Newcomb in the late 19th century, not NASA): http://dropcanvas.com/tfe1t ... https://www.youtube.com/watch?v=2FgKH2fV6DE

Comet Siding Spring will be making a close pass by Mars on October 19th, so close that NASA is taking steps to protect their spacecraft orbiting Mars from a potential increase in micrometeorite strikes. Here's what C/2013 A1 Siding Spring looked like yesterday as seen from the iTelescope.net T30 telescope in Siding Spring, Australia. It passed by several galaxies including NGC 1316 and NGC 1317 in the top right corner, and NGC 1310 in the bottom right corner. Another small galaxy, ESO 301-8, is just above the comet. These are R filtered 60 second exposures. Full resolution stacked image: http://h.dropcanvas.com/sysrw/sidingspringcompositestack.jpg ... https://www.youtube.com/watch?v=I0ulqdS_Zps

Annotated SDO: https://www.youtube.com/channel/UCJAoKCBmXcRY406OIBSo_Jg TLE data from this morning's observations: https://drive.google.com/file/d/1XWmbhFQukuW0R5At2N1lfGvyeehD-kGX/view?usp=sharing Music: The Divine Cosmos by Stellardrone ... https://www.youtube.com/watch?v=pwDAqac_ALk