From DeepSkyVideos. Professor Mike Merrifield discusses Caldwell 3 (aka NGC 4236) – leading to talk about the tip of the Red Giant Branch and so-called Helium Flashes. More links and info in full description ↓↓↓ Mike Merrifield is an emeritus professor from the University of Nottingham. The M 81 group of galaxies: New distances, kinematics…

From DeepSkyVideos. Full interview with SETI’s Seth Shostak from our video about NGC 2403 – Main video is at — https://youtu.be/kkNWEu5KWkY — More links and info in full description ↓↓↓ Seth Shostak: http://sethshostak.com Seth Shostak’s thesis: https://core.ac.uk/download/pdf/11812191.pdf Messier Objects playlist: http://bit.ly/MessierObjects Back us on Patreon: https://www.patreon.com/deepskyvideos Astronomy at The University of Nottingham: https://www.nottingham.ac.uk/astronomy/ Twitter: https://twitter.com/DeepSkyVideos…

From DeepSkyVideos. Mike Merrifield and Seth Shostak discuss a bewildering discovery in NGC 2403… and an offer to its alien inhabitants — Patreon bonus: https://www.patreon.com/posts/129506586 — Full Shostak video: https://youtu.be/xy2mE07Pp8E NGC 2403 is also known at Caldwell 7 Our video on Caldwell 1 – https://youtu.be/Et2Ij161PXE Our video on Caldwell 2 – https://youtu.be/Or3Db6ENf84 Messier 33 –…

From DeepSkyVideos. Abell 1 is the first galaxy cluster in the so-called Abell Catalogue. Professor Meghan Gray has the story. More links and info in full description ↓↓↓ Professor Gray is based at the University of Nottingham – https://www.nottingham.ac.uk/physics/people/meghan.gray More videos with Dr Gray – https://www.youtube.com/playlist?list=PLcUY9vudNKBORQN625NgO3c4T82M6w2st Messier Objects playlist: http://bit.ly/MessierObjects Back us on Patreon: https://www.patreon.com/deepskyvideos…

From DeepSkyVideos. Professor Mike Merrifield on the second entry in the so-called Caldwell Catalogue, a planetary nebula with a fascinating story to tell. More links and info in full description ↓↓↓ More Caldwell Catalogue videos: https://www.youtube.com/playlist?list=PLXJEVJey9Wz4RQK6uXH0O0t9504NnyzJL Mike Merrifield is an emeritus professor from the University of Nottingham. Messier Objects playlist: http://bit.ly/MessierObjects Back us on Patreon:…

From DeepSkyVideos. Professor Meghan Gray discusses the double star Albireo (also known as Beta Cygni) at the head of swan in the constellation Cygnus… More links and info in full description ↓↓↓ Messier Objects playlist: http://bit.ly/MessierObjects Telescopes playlist: https://www.youtube.com/playlist?list=PLFDDC58C2516AE284 Back us on Patreon: https://www.patreon.com/deepskyvideos More videos with Meghan Gray: https://www.youtube.com/playlist?list=PLcUY9vudNKBORQN625NgO3c4T82M6w2st Some papers from this video……

From DeepSkyVideos. The open cluster NGC 188 has retained an unusual population of middle-aged stars due to an orbit which spends long periods away from the messy galactic plane. More links and info in full description ↓↓↓ Discussed by Professor Mike Merrifield, emeritus professor from the University of Nottingham. The cluster is also dubbed Caldwell…

From DeepSkyVideos. Professor Meghan Gray discusses how a musical link started her exploration of this Near Earth Asteroid. More links and info in full description ↓↓↓ Composer Kaija Saariaho’s page: https://saariaho.org/works/asteroid-4179-toutatis IAU’s Minor Planet Centre: https://www.minorplanetcenter.net/db_search/show_object?object_id=4179 The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang’e-2: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3860288/ Our Messier Objects playlist: http://bit.ly/MessierObjects…

From DeepSkyVideos. Professor Meghan Gray discusses the Great Comet of 1997, Hale-Bopp. Also known less grandiosely as C/1995 O1. More links and info in full description ↓↓↓ Circular about Hale-Bopp’s discovery: http://www.cbat.eps.harvard.edu/iauc/06100/06187.html#Item1 JWST Observations of Comet C/1995 O1 (Hale-Bopp) at 46 au: https://ui.adsabs.harvard.edu/abs/2022DPS….5430902K/abstract Messier Objects playlist: http://bit.ly/MessierObjects Brady visits Messier’s grave: https://youtu.be/W3-hwKQqy0I Back us on…

From DeepSkyVideos. Professor Meghan Gray discusses the immense galaxy cluster El Gordo (The Fat One), also known less catchily as ACT-CL J0102-4915. More links and info in full description ↓↓↓ Professor Gray: https://www.nottingham.ac.uk/physics/people/meghan.gray The Atacama Cosmology Telescope: ACT-CL J0102-4915 "El Gordo," a Massive Merging Cluster at Redshift 0.87 – https://ui.adsabs.harvard.edu/abs/2012ApJ…748….7M/abstract JWST’s PEARLS: A new lens…

From DeepSkyVideos. Professor Meghan Gray explains the sometimes strange phenomenon of twin quasars. More links and info in full description ↓↓↓ Professor Gray is an astronomy professor at The University of Nottingham – https://www.nottingham.ac.uk/physics/people/meghan.gray A close quasar pair in a disk–disk galaxy merger at z = 2.17 – https://doi.org/10.1038/s41586-023-05766-6 0957+561 A, B: twin quasistellar objects…

From DeepSkyVideos. An intergalactic stream of stars in the galaxy cluster Abell 1795 – featuring Professor Mike Merrifield. More links and info in full description ↓↓↓ Back us on Patreon: https://www.patreon.com/deepskyvideos MMTF-Hα and HST-FUV Imaging of the Filamentary Complex in ABELL 1795: https://ui.adsabs.harvard.edu/abs/2009ApJ…703L.172M/abstract Michael Merrifield: https://www.nottingham.ac.uk/physics/people/michael.merrifield Messier Objects playlist: http://bit.ly/MessierObjects Deep Sky Videos website: http://www.deepskyvideos.com/…

From DeepSkyVideos. Professor Mike Merrifield discusses a new perspective of the Crab Nebula, also known as Messier 1. More links and info in full description ↓↓↓ SITELLE data paper: https://arxiv.org/abs/2101.02709 Merge Cube: https://mergeedu.com/cube Crab model for viewing with Merge Cube or just in AR: https://objects.mergeedu.com/link/KVKDP5 And for your paperweight needs: https://crystalnebulae.co.uk Messier Objects playlist: http://bit.ly/MessierObjects…

From DeepSkyVideos. Professor Mike Merrifield discusses methods for measuring the distance to NGC 2. Includes the Tully-Fisher method. More links and info in full description ↓↓↓ More Mike Merrifield: http://bit.ly/Merrifield_Playlist Professor Merrifield on Twitter: https://twitter.com/AstroMikeMerri A New Method of Determining Distances to Galaxies: https://ui.adsabs.harvard.edu/abs/1975BAAS….7..426T/abstract Our thanks to Professor Tully for the picture of him with…

From DeepSkyVideos. NGC 1 occupies prime position in the famed New General Catalogue – but why? More links and info in full description ↓↓↓ All 110 Messier Objects playlist: http://bit.ly/MessierObjects More Mike Merrifield: http://bit.ly/Merrifield_Playlist Professor Merrifield on Twitter: https://twitter.com/AstroMikeMerri Larger λR in the disc of isolated active spiral galaxies than in their non-active twins: https://doi.org/10.1051/0004-6361/202038091…