Finally... my first #textbook on #Gravity #Physics! "Variational Approach to Gravity Field Theories" @AuthorZone springer.com/us/book/978331…😀✨😎

At the cash machine queue this morning I notice this big bright sun dog! Luckily I had my camera... Sᴏᴜᴛʜᴇʀɴ ᴇɴɢʟᴀɴᴅ ᴡᴇᴀᴛʜᴇʀ Jo Cindy Luke @astro_niks Nicola @JoMarie357 Dawn Carolyn Hailstones Wanstead weather Mark Dunn @dunntweetin Revel

#FAPESP: #Model of #Galaxy and #Star #Cluster #Formation Is #Rectified astrocometal.blogspot.it/2017/12/fapesp…

This is an exciting announcement. x.com/CaliaDomenico/…

Free photography books for beginners ➡e-booksdirectory.com/listing.php?ca… #photography #freebooks

The Orion Nebula on a cold December night, by Trevor Jones in St. Catharines, Ontario, CN. "We've not had many clear nights this December, but the night I shot this photo was cold (-20C!) and clear."

IC1318 - Butterfly nebula. A combination of data from two different scopes. Taken from my garden in Spain. 62 hours worth of data as it was a 6 pane mosaic in the TMB 152.

Or it could’ve been just an irregular shaped rock simply passing us by from interstellar space. Btw it’s trajectory was determined long before life probably even existed on Planet Earth. But hey, what do I know 🤷🏽‍♂️ x.com/huffpost/statu…

#Cassini with a powerful #telescope having a focal length of 34 ft, (more than 10 m) discovered, on December 23, 1672, very close to #Saturn, a third celestial body #Rhea. 🔭👍📖✨🎉📣springer.com/us/book/978331…

#Portsmouth: '#Cosmic #Lantern' Could Help Us #Understand Fate of #Universe astrocometal.blogspot.it/2017/12/portsm…

Today, December 25, 1759 #Halley's #comet returned and the date was predicted for the first time with mathematician calculus by three #astronomers #Lalande, #Clairaut and madame #Lepaute, another "forgotten sister"? ☄️📚✍️🔭📐💫📏🕰️🌝😀astrocometal.blogspot.it/2016/08/spring…

Don't miss Mars and Jupiter! Look generally eastward - somewhat high in the sky - before sunup. Photos: earthsky.org/astronomy-esse… Info: earthsky.org/tonight/marsju… Photo from today: Jenney Disimon

The middle of the Heart nebula - Taken from my garden in Spain. This is a three pane mosaic taken with the TMB152/1200.... You can see a larger version on my website swagastro.com/ic1805.html

And for a couple of nice articles on this topic: sciencenews.org/article/debate… forbes.com/sites/startswi… #cosmology #Hubble

A 3D journey through the Orion Nebula! bit.ly/2Djjclt Astronomers and visualization specialists at NASA have just released this unprecedented, 3-dimensional, fly-through view of the Orion Nebula, a nearby star-forming region.

Got lots of imaging tonight. Got this 30 second shot of M42 Orion Nebula with the C8/Alpha 6K/focal reducer, the meteor shot right through!

Some great views of the Grand Canyon from 45,000 feet

How to locate planet Uranus bit.ly/2E6djZA With the moon in front of Pisces, you're not likely to see Pisces' faint V-shape. To get oriented, look instead for the Circlet in Pisces (lower right on this chart).