White zvipfupi, zvipfupi dema

Nezvenyeredzi, kune vazhinji vanzika, inoshamisa, uye dzimwe nguva kunoshamisa mananara, rimwe riri chena zvipfupi. Pakati wokutanga kudzidza zvinhu izvi yokudenga yaita musayendisiti Wilhelm Bessel. akavawana zvikuru netsaona. The chinhu kutsvakurudza ake yepakutanga yaiva chakajeka nyeredzi - Sirius. Kufarira nokudzidziswa muchiitwa akakonzera kujairika trajectory pamusoro nyika, kureva kuti iye aiva undulating. Bessel akatanga kutsvaka kunge nezvikonzero angaita kuti vakadaro vatorwa, ari maonero ake, ari mananara.

Constant richiona nezvezvabuda Sirius chakaita masayendisiti kufunga kuti munguva pfupi pedyo kwenyika imwe, asingazivikanwi, nyeredzi kuti chisingaoneki, asi rawo rinokweva simba rine simba rokuchinja. Izvi anosimbisa kuziva nguva nenguva nokufamba vari kufamba Sirius. Chimwe chakawanikwa kwakaitwa imwe nyanzvi. Iye akataura kuti kana chena pfupi iri chaiyo, zvino nguva kurapwa uye Sirius, uye risingazivikanwi nyika kumativi ravaigona muzinda regiravhiti iri anenge kuenzana makore 50. Planet Sirius achiri chinokwezva masayendisiti ose pamusoro nyika yayo miviri chakavanzika uye anoramba ari kutsvaka-pashure chinhu kutsvakurudza.

Kana iwe chete kutsanangura chena zvipfupi, ndicho chinhu risingazivikanwi hunhu uko zvakanaka chakavigwa muna kure makona zvakasikwa uye vakasara nenyeredzi. Mumazuva ekare, apo Manyiminya midziyo haasati izvozvo yepamusoro chisarudzo nezvaanogona, zvakanzi vaidavira kuti chena zvipfupi nyeredzi - isingawanzowanikwi kuwanika asi masayendisiti vanoti zvakasiyana nhasi. Maererano American nyanzvi, nhamba masangano aya anopfuura 10 bhiriyoni. Ndiko 5% of nhamba yenyeredzi uyo anonzi vari redu renyeredzi.

Masayendisiti anodavira kuti nyeredzi zvipfupi - ndivo yedu vavakidzani dzapedyo. White zvipfupi ane mhepo ane ukobvu ari mazana inoverengeka metres, izvozvo rinoumbwa zhinji makemikari anozivikanwa murume. Somuenzaniso: calcium, simbi, rehydrogen, titanium oxide, nehelium, uye kabhoni. dhayamita wayo kugara uye zvakaenzana 40 000? km. Two Mhando dwarfs chena Hot uye kutonhora, ane mhepo anoumbwa zvachose kuti nehelium. Sezvo chikamu chokutanga rehydrogen romugove masayendisiti akawana kuti 0,05%.

Dwarf nyika vazvibate sezvinoita kudziyirwa ne imwe cannonball, iyo anochinja tembiricha apo zvichiratidza simba. The hukuru aya mitumbi yokudenga zvakafanana nguva dzose. Nyanzvi dzezvomuchadenga akaverenga kukosha mukuru wavo uremu, duku nharaunda yavo.

The chena pfupi mumwe chete chimiro simba - kupisa. kutonhora Its zvinogona kufananidzwa kutonhora resimbi tsvimbo, izvo vanobviswa fryer. Chokutanga, muitiro anoenda nokukurumidza, asi rekukwazisa tembiricha mukati vakaurawa, kutonhora kunova kunonoka.

Masayendisiti anofungidzira kuti nguva shoma mamiriyoni zana makore chena zvipfupi luminosity kuwa ne chete 1% of zvachose luminosity kwezuva. Kuburikidza mabhiriyoni kwemakore zvingava kuumba munhu mutema zvipfupi. mitumbi Vose vave zvishoma akadzidza saka kure, asi uri zvikuru uye vanongogara mumunda maonero remasayendisiti.

An dzinonakidza muenzaniso munhu uremu kukarukureta kufungisisa giravhiti pamusoro pechiso chena zvipfupi. Ngatitii munhu ane uremu 75 makirogiramu Panyika, apo zuva achava uremu matani 2, mumwe pfupi nyika kwaizowedzera kuti matani 120-140.

A guru nyeredzi muchadenga anorasikirwa simba pamusoro mamiriyoni emakore, uye izvozvo dwarfs kunze utambanudzire ari yenyukireya zera, huripo pamusoro kwemabhiriyoni emakore. Mysteries kuramba yekudyidzana kupfuura fungidzira nzira dzavo mhinduro, asi zvinonzi vaitarisira kuti nokukurumidza chifukidziro yechakavanzika angazarura. Zvikurukuru, mumakore achangopfuura vanoshingaira basa riri kuitwa vanoongorora nyeredzi kubva University. Washington.