hvězdy
exoplanety
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Projděte si nejnovější vědecké studie o hvězdách a exoplanetách v naší galaxii. Objevte nejnovější výzkumy astrofyziky a hvězdné astronomie.
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Další výzkum
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| Název hvězdy | Mass | Distance | ||
|---|---|---|---|---|
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Gaia EDR3 6035956925371144832 | - | 49 ly | |
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G 15-2 | M3.0Ve | - | 49 ly |
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CD-49 2340 B | - | 49 ly | |
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L 404-10 | M3 | - | 49 ly |
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LP 779-10 | M3.5 | - | 49 ly |
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LP 549-6 | M4.5V | - | 49.1 ly |
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2MASS J1921-2915 2MASS J19212977-2915507 |
- | 49.1 ly | |
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SIPS J0004-2058 | - | 49.1 ly | |
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PM J01439-0654 | M3 | - | 49.1 ly |
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LP 575-35 | M5V | - | 49.1 ly |
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Wolf 1457 WISEA J053600.15-073853.5, TIC 388934726, NLTT 15348, 2MASS J05360007-0738580, LTT 2321, LP 658-72, GJ 3357, Gliese 3357, LHS 5109, L 882-76 |
dM4.0 | - | 49.1 ly |
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G 252-33 | M5V | - | 49.1 ly |
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G 190-27 | M4.2V | - | 49.1 ly |
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SCR J1826-6542 | - | 49.1 ly | |
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BD+02 1729 | M0.0Ve | - | 49.2 ly |
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Castor Ca V* YY Gem, YY Geminorum, BD+32°1582 |
M0.5VeFe-2 | 0.6 M☉ | 49.2 ly |
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HD 4391 B | M4V | - | 49.2 ly |
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SCR J2016-7531 | - | 49.2 ly | |
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Alpha Corvi B | M4V | - | 49.2 ly |
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LP 925-8 | - | 49.3 ly | |
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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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StellarGuide: Hvězdy
Hvězdy
Hvězdy jsou obrovské koule horkého plynu, které září díky energii vznikající jadernou fúzí v jejich jádru. Většina hvězd se skládá převážně z vodíku a helia. V centru hvězdy dochází díky vysokému tlaku a teplotě k přeměně vodíku na helium, přičemž se uvolňuje obrovské množství energie ve formě světla a tepla.More about Hvězdy
