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Liste des Naines brunes

        
    
Plus à propos Naines brunes
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Etoile 521-540
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Nom de l étoile Mass Distance

Gaia EDR3 4048944014492875648
- 74.1 ly

Gaia EDR3 4313112368918913024
- 74.1 ly

Gaia EDR3 854386612853967744
- 74.1 ly

WISE J233527.07+451140.9
L9pec - 74.1 ly

2MASS J05004808+0442143
L0.5pec - 74.2 ly

Gaia EDR3 4068325724384536320
- 74.3 ly

SIPS J0031-3840
L1.2V - 74.3 ly

2MASS J06320617+8305014
L0.5 - 74.4 ly

Gaia EDR3 4303965875262889472
- 74.5 ly

Gaia EDR3 4146047383865700864
- 74.6 ly

2MASS J0926+5847
2MASS J09261537+5847212
T3.5 - 74.6 ly

2MASS J0926+5847 B
T5 - 74.6 ly

Gaia EDR3 4068962066817869440
- 74.7 ly

Gaia EDR3 3591011474602344320
- 74.7 ly

Gaia EDR3 4483969878781058944
- 74.9 ly

2MASS J00332386-1521309
L4beta - 75 ly

Gaia EDR3 6724002272369481216
- 75.1 ly

Gaia EDR3 3056233482992410496
- 75.2 ly

Gaia EDR3 1835163079484365184
- 75.4 ly

Gaia EDR3 6836547453635933056
- 75.4 ly
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Naines brunes nouvelles

Patchy water clouds and chemical changes observed on brown dwarf WISE 0855
icon17. 10. 2026
iconÉtoiles | Naines brunes | Atmosphères planétaire
Image: Patchy water clouds and chemical changes observed on brown dwarf WISE 0855
WISE 0855 represents the coldest known brown dwarf, an object too large to be a planet but too small to sustain the nuclear fusion that powers stars. With a temperature of roughly 265 Kelvin, it is cold enough to host complex atmospheric phenomena similar to those seen on gas giant planets in our solar system. Observations reveal that this object is not uniform but features patchy water clouds distributed throughout its atmosphere, which influence its light patterns over time. To study this, ...
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Massive brown dwarf HD 203771 b confirmed in eccentric orbit around orange dwarf
icon14. 10. 2026
iconÉtoiles | Exoplanètes | Naine orange | Naines brune
Image: Massive brown dwarf HD 203771 b confirmed in eccentric orbit around orange dwarf
Massive brown dwarf HD 203771 b confirmed in an eccentric orbit around an orange dwarf star. New mass measurements place the companion at approximately 70 times the mass of Jupiter, revealing insights into how brown dwarfs migrate inward over time....
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Silicate clouds and gaseous silicon monoxide identified in three early L-dwarf objects
icon9. 10. 2026
iconÉtoiles | Naines brunes | Atmosphères planétaire
Image: Silicate clouds and gaseous silicon monoxide identified in three early L-dwarf objects
Analysis of three early L-dwarfs, HD 89744 B, Gliese 1048 B, and LSPM J0632+5053 B, reveals gaseous silicon monoxide and silicate clouds in their atmospheres. JWST data confirms these mineral clouds form as silicon gas condenses, mimicking processes in giant planets....
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study iconResearch in Naines brunes

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Frequently Asked Questions about nearby stars

What is the nearest star?

Nearest star is Proxima Centauri, located approximately 4.24 light-years (1.30 parsecs) from the Sun. It is part of the Alpha Centauri star system, which also includes Alpha Centauri A and Alpha Centauri B.

What are the nearest stars to Earth?

Nearest stars to Earth include the Alpha Centauri system (Alpha Centauri A, Alpha Centauri B, and Proxima Centauri), Barnard's Star, and Wolf 359. There are also brown dwarfs Luhman 16 and WISE 0855−0714.

What is the solar neighborhood?

Solar neighborhood (also Local Interstellar Cloud) is the region of interstellar space that surrounds the Sun with diameter about 15 light years. Stellar Catalog database includes all stars contained within this region.

How do astronomers measure distances to stars?

Astronomers use methods like parallax, standard candles, and redshift to measure distances to stars. Parallax is especially useful for nearby stars in our solar neighborhood, while other techniques help map the universe beyond.

Are there any exoplanets orbiting the nearest stars?

Yes, several exoplanets have been discovered orbiting the nearest stars. For example, Proxima Centauri has an exoplanet called Proxima Centauri b, which is located in the star's habitable zone and is the closest known exoplanet to Earth.

Why are the nearest stars important for astronomy and physics?

The nearest stars provide valuable laboratories for studying stellar evolution, space environments, and the fundamental physics of stars. Observing these stars helps astronomers understand the structure of our galaxy and the broader universe.
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exoplanet iconStellarGuide: Étoiles

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Étoiles
Les étoiles sont d’immenses sphères de gaz chaud qui brillent en produisant de l’énergie grâce à la fusion nucléaire dans leur noyau. La plupart des étoiles sont composées principalement d’hydrogène et d’hélium. Au centre d’une étoile, la pression et la température élevées provoquent la fusion des atomes d’hydrogène en hélium, libérant ainsi une énorme quantité d’énergie sous forme de lumière et de chaleur.
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