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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LP 630-81 DENIS J182616.5+014620, 2MASS J18261655+0146210, NLTT 46476, TIC 269013949, Gaia DR2 4276822089967374336 |
M4V | - | 59 ly |
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G 6-7 | M4.5V | - | 59 ly |
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HD 82443 B | M5.5V | - | 59 ly |
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LSPM J0219+5919 | - | 59 ly | |
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2MASS J21265788+2531080 | M9V | - | 59 ly |
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G 131-26 | M5V | - | 59 ly |
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G 2-33 | M1V | - | 59 ly |
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EK Ceti V* EK Ceti |
M2.5Ve | - | 59 ly |
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Ross 734 | M4V | - | 59.1 ly |
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CD-53 1213 | M2e | - | 59.1 ly |
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2MASSI J0417-0800 2MASSI J0417374-080000 |
M7.5V | - | 59.1 ly |
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UCAC3 152-281176 Gaia EDR3 4105057482987021184 |
M5 | - | 59.1 ly |
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G 54-19 Gaia EDR3 628865130046268672 |
M4.5V | - | 59.1 ly |
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SCR J1510-5141 | - | 59.1 ly | |
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Ross 733 | M4.5V | - | 59.1 ly |
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G 184-36 | M3.0Ve | - | 59.1 ly |
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UCAC3 152-281185 | M5 | - | 59.2 ly |
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UPM J1051-5052 | - | 59.2 ly | |
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G 17-38 | M3.5 | - | 59.2 ly |
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DENIS J0630-1840 DENIS J063001.4-184014, DENIS J063001.4−184014AB, 2MASS J06300140-1840143, TIC 47642047, WISEA J063001.68-184019.9, Gaia DR2 2940211607277084672 |
M9.0V C | 0.05 M☉ | 59.2 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
