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Enanas rojas
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Enanas rojas

Las enanas rojas son estrellas pequeñas y frías que representan más del 70% de nuestra galaxia. Si el Sol fuera un faro brillante, una enana roja sería como una vela tenue con una temperatura de unos 3.000 K. Tienen solo el 8-50% de la masa del Sol, pero mediante convección total, mezclan su combustible como en un gran caldero y queman hidrógeno muy lentamente. 

Mientras que el Sol morirá en miles de millones de años, estos "maratonistas espaciales" pueden brillar durante billones de años. Suelen tener planetas, pero debido a su bajo brillo, estos mundos deben estar mucho más cerca que la Tierra del Sol para no congelarse, exponiéndolos a fuertes erupciones.
  • Percentage of Enanas rojas within 98.5 años luz: 70.83 % (6742 from 9518 stars)
  • Average masa of Enanas rojas: 7.5-50% solar mass
  • Average radius of Enanas rojas: 10-60% solar radius
  • Average temperatura of Enanas rojas: 2400-3900 K

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Latest news from Enanas rojas

Orbital and atmospheric evolution of the mini-Neptune TOI-2257 b
icon15. 10. 2026
iconEstrellas | Exoplanetas | Enanas rojas | Supertierras | Atmósferas planetarias | TESS
Image: Orbital and atmospheric evolution of the mini-Neptune TOI-2257 b
TOI-2257 b represents a unique case in planetary science due to its 35-day orbital period and high eccentricity, which describes how much an orbit deviates from a perfect circle. Located in a sparsely populated region of planetary parameter space, it sits at a critical threshold where the combined effects of stellar radiation and tidal forces - gravitational stresses caused by the host star - begin to lose their influence over the planet. Simulations show that the planet remains near this transi...
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Atmospheric composition of sub-Neptune planets around Red dwarf stars reveals new hybrid class
icon6. 10. 2026
iconEstrellas | Exoplanetas | Enanas rojas | Telescopio espacial James Webb | Atmósferas planetarias | Planetas océano
Image: Atmospheric composition of sub-Neptune planets around Red dwarf stars reveals new hybrid class
Analysis of sub-Neptune planets around Red dwarf stars using JWST data reveals a new category of hybrid worlds. These planets have atmospheric compositions that do not align with traditional gas dwarf or water world definitions. Study highlights include TOI-776 c....
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Observations of TRAPPIST-1 c reveal a likely airless surface without a thick atmosphere
icon3. 10. 2026
iconEstrellas | Exoplanetas | Enanas rojas | Telescopio espacial James Webb | Atmósferas planetari
Image: Observations of TRAPPIST-1 c reveal a likely airless surface without a thick atmosphere
Analysis of four transit observations of TRAPPIST-1 c shows the planet is likely airless. By using a new method to account for stellar activity, researchers ruled out thick carbon dioxide and nitrogen atmospheres for this rocky exoplanet....
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Cold sub-Neptune TOI-6981 b discovered orbiting near the water ice line
icon30. 9. 2026
iconEstrellas | Exoplanetas | TESS | Enanas roj
Image: Cold sub-Neptune TOI-6981 b discovered orbiting near the water ice line
TOI-6981 b is a cold sub-Neptune planet discovered orbiting its Red dwarf host star at the water ice line. With a temperature of 170 K and a 60.8-day orbit, it stands as a key target for future atmospheric studies using the James Webb Space Telescope....
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Temperate sub-Neptune planet orbiting the red dwarf star TOI-210 confirmed
icon29. 9. 2026
iconEstrellas | Exoplanetas | Enanas rojas | TESS
Image: Temperate sub-Neptune planet orbiting the red dwarf star TOI-210 confirmed
A temperate sub-Neptune planet, TOI-210 b, has been confirmed orbiting the red dwarf TOI-210. With 6.75 times Earth's mass, the planet is likely a water-rich world or a gas dwarf. Evidence also points to two additional planets in the system....
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