This list covers all known stars, brown dwarfs, and sub-brown dwarfs within 20 light-years (6.13 parsecs) of the Sun. So far, 131 such objects have been found, of which only 22 are bright enough to be visible without a telescope. The visible light needs to reach or exceed the dimmest brightness to be visible to the naked eye from Earth, 6.5 apparent magnitude. The known 131 objects are bound in 94 stellar systems. Of those, 103 are main sequence stars: 80 red dwarfs and 23 "typical" stars having greater mass. Additionally, astronomers have found 6 white dwarfs (stars that have exhausted all fusible hydrogen), 20 brown dwarfs, as well as 2 sub-brown dwarfs: WISE 0855−0714 (probably a rogue planet) and WISE 1741+2553. The closest system is Alpha Centauri, with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth. The brightest, most massive and most luminous object among those 131 is Sirius A, which is also the brightest object in Earth's night sky; its white dwarf companion Sirius B is the hottest object among them. The largest object within the 20 light-years is Procyon. Our Solar System, and the other stars/dwarfs listed here, are currently moving within (or near) the Local Interstellar Cloud, roughly 30 light-years (9.2 pc) across. The Local Interstellar Cloud is, in turn, contained inside the Local Bubble, a cavity in the interstellar medium about 300 light-years (92.0 pc) across. It contains Ursa Major and the Hyades star cluster, among others. The Local Bubble also contains the neighboring G-Cloud, which contains the stars Alpha Centauri and Altair. In the galactic context, the Local Bubble is a small part of the Orion Arm, which contains most stars that we can see without a telescope. The Orion arm is one of the spiral arms of our Milky Way galaxy. (Wikipedia).
Science Bulletins: Elusive Y-Dwarfs Discovered
Brown dwarfs are cosmic objects that are intermediate between stars and planets. Scientists have spent more than a decade seeking confirmation of the coolest, faintest type of brown dwarfs—Y-dwarfs—which had been predicted but never seen. Recently, the powerful infrared vision of NASA's Wi
From playlist Science Bulletins
Brown Dwarfs: Crash Course Astronomy #28
While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement called brown dwarfs. Brown dwarfs have a mass between giant planets and small stars. They were only recently discovered in the
From playlist Astronomy
WISE Finds Few Brown Dwarfs Close to Home
NASA's WISE telescope has discovered that there are fewer brown dwarfs in our solar neighborhood than previously thought.
From playlist NEOWISE
This Moon-Sized White Dwarf Star Is The Smallest Ever Found!
Dotted across the universe are bizarre objects and astronomers have just found one of them! They have discovered the smallest, yet most massive white dwarf star! A rare star that forms when an ancient star has shed its outer layers and left only the smouldering core, known as a white dwarf
From playlist SPACE FIX - The news of the Universe
Science Bulletins: Brown Dwarfs—Tail End of the Stars
Journey to the heights of Mauna Kea in Hawaii where astronomers search for brown dwarfs, cosmic bodies that are not quite stars and not quite planets. These long-sought objects are still elusive and visible largely with advanced technologies such as the adaptive optics tools on the Keck II
From playlist Science Bulletins
Teach Astronomy - Nearby Stars
http://www.teachastronomy.com/ Surveying the volume around the Sun for the nearest stars reveals something interesting. If we look in the volume around the Sun, the nearest few lightyears, for the nearest one hundred stars most of them are actually not like the Sun at all. Almost all of
From playlist 15. Stars 2
Teach Astronomy - White Dwarf Stars
http://www.teachastronomy.com/ Some stars in the sky, somewhat hotter than the Sun with temperatures of 5 thousand to 10 thousand Kelvin, have very low luminosities in the range of one-hundredth to one-thousandth the Sun's luminosity. Application of the Stephan-Boltzmann Law shows that th
From playlist 14. Stars
What are white dwarfs? (Astronomy)
Our Socratica Astronomy series is back! Bookmark the playlist here: ✷ https://socratica.link/Astro_Playlist We also ask you join our STELLAR email list so we can notify you when new videos go live: ✷ https://snu.socratica.com/astronomy (Don’t rely on the YT algorithm to show you what
From playlist Astronomy
White dwarfs are a type of stellar corpse, the mass left over when fusion stops in a star. They would collapse on themselves under gravity if it wasn't for quantum mechanics, the Pauli exclusion principle, and electron degeneracy pressure. Here's how they work. ____________________________
From playlist Astronomy
Incredibly Accurate Map of Nearby 10 Parsec Around The Solar System
I wrote a foreword for this awesome Sci-Fi book here: https://amzn.to/3aGrg0I Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will
From playlist Unusual Exoplanets
5 NEAREST STARS TO THE SUN - Space Engine
Hello and welcome to What Da Math! In this video, we will talk about the five closest stars to our own solar system. Enjoy the video! Patreon page: https://www.patreon.com/user?u=2318196&ty=h Enjoy and please subscribe. Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3
From playlist Space Engine
Thanks to NASA's James Webb Space Telescope (JWST) project and the Space Telescope Science Institute for supporting this video. This video is about the line between Brown dwarfs and gas giant planets (aka super Jupiter's): does it exist? Is it the deuterium-burning threshold? Behavior? Me
From playlist What Fraser's watching
Revealing The Surface of Luhman 16 - Closest Brown Dwarfs to Us
I wrote a foreword for this awesome Sci-Fi book here: https://amzn.to/3aGrg0I Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will talk ab
From playlist Brown Dwarfs
Super Massive Brown Dwarfs That Should Be Stars But Aren't
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will tal
From playlist Mysteries of the Universe
New Discoveries From the Nearest Brown Dwarf Luhman 16
You can buy Universe Sandbox 2 here: http://amzn.to/2yJqwU6 Or get a shirt: https://teespring.com/stores/whatdamath Hello and welcome! My name is Anton and in this video, we will talk about new discoveries coming from the nearest brown dwarf system to us - Luhman 16. Paper:https://iopsc
From playlist Brown Dwarfs
Trillions of Rogue Planets Hidden In Our Galaxy With One Very Close
I wrote a foreword for this awesome Sci-Fi book here: https://amzn.to/3aGrg0I Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will talk ab
From playlist Unusual Exoplanets
Scientists Find a Way to Explain The Origin and Nature of Brown Dwarfs
You can buy Universe Sandbox 2 game here: http://amzn.to/2yJqwU6 Hello and welcome! My name is Anton and in this video, we will talk about a recent study that manages to find a way to classify brown dwarfs in a new way. Find the study here: https://www.uni-heidelberg.de/presse/news2019/p
From playlist Brown Dwarfs
Black Holes VS Brown Dwarfs, Moon Telescopes, Galaxy Collision | Q&A 201
Which ones are more invisible: black holes of brown dwarfs? Which cheap telescope should you get? Will the Artemis program start a new era in astronomy? What will happen when Andromeda crashes into the Milky Way? All this and more in this week's Q&A with Fraser Cain. 00:00 Start 01:21 [Ta
From playlist Fraser Cain / Universe Today Podcast