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.
Aktuální výzkum
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| Název hvězdy | Mass | Distance | ||
|---|---|---|---|---|
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SCR J1209-3815 | - | 57.9 ly | |
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Gaia EDR3 4271449399422291712 | - | 58 ly | |
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Wolf 1466 | M1 | - | 58 ly |
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HIP 38594 HIC 38594, LTT 2976, NLTT 18618, CD-24 6144, 2MASS J07541090-2518116, Ross 429, SAO 174768, TIC 128902569, TYC 6557-844-1, WISEA J075410.65-251809.3, WDS J07542-2518A |
M0 D | 0.61 M☉ | 58 ly |
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BD+21 1764 B Gaia EDR3 676689831406224384 |
M3.0V | - | 58 ly |
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Gaia EDR3 4271449399415019904 | - | 58 ly | |
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2MASSI J0354-1437 2MASSI J0354200-143738, Gaia EDR3 5110641302736199424 |
- | 58 ly | |
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G 139-3 GJ 3981, Gliese 3981, TIC 353287103, WISEA J165824.95+135810.7, NLTT 43925, 2MASS J16582531+1358106 |
M4.0V | - | 58 ly |
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G 139-3 B | - | 58 ly | |
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G 210-20 | - | 58 ly | |
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G 125-23 | M4 | - | 58 ly |
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2MASS J1615+0546 2MASS J16154245+0546400 |
M9 | - | 58.1 ly |
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HD 188807 B LP 754-5 |
M5V | - | 58.1 ly |
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UPM J0900+7522 | - | 58.1 ly | |
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G 31-39 | M4V | - | 58.1 ly |
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BD+05 127 | M0.0Ve | - | 58.1 ly |
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DO 34294 | M0 | - | 58.1 ly |
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G 268-131 Gaia EDR3 5041034524411980288 |
M4 | - | 58.1 ly |
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Ross 226 | M3V | - | 58.1 ly |
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LSPM J1437+7536S | - | 58.1 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
