Search results
Results from the WOW.Com Content Network
Botanical illustration of a pōhutukawa sprig by Ellen Cheeseman. Pōhutukawa (Metrosideros excelsa), [2] also known as the New Zealand Christmas tree, [3] [4] or iron tree, [5] is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of red (or occasionally orange, yellow [6] or white [7]) flowers, each consisting of a mass of stamens.
The 16th magnitude star is an A-type main-sequence star of type A2V, and is separated from the white dwarf by at least 1277 au. [7] The A-type star orbits at roughly the same distance as the edge of a dust cloud surrounding the central white dwarf. [7] The system is likely a quadruple star system. [8]
A celestial map by the Dutch cartographer Frederik de Wit, 1670. A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. [1] They have been used for human navigation since time immemorial. [2]
Below there are lists the nearest stars separated by spectral type.The scope of the list is still restricted to the main sequence spectral types: M, K, F, G, A, B and O.It may be later expanded to other types, such as S, D or C.
A multiple star system consists of two or more stars that appear from Earth to be close to one another in the sky. [dubious – discuss] This may result from the stars actually being physically close and gravitationally bound to each other, in which case it is a physical multiple star, or this closeness may be merely apparent, in which case it is an optical multiple star [a] Physical multiple ...
Arcturus is the zenith star of the Hawaiian Islands. Using Hōkūleʻa and other stars, the Polynesians launched their double-hulled canoes from Tahiti and the Marquesas Islands. Traveling east and north they eventually crossed the equator and reached the latitude at which Arcturus would appear directly overhead in the summer night sky.
NGC 246's central star is the 12th magnitude [7] white dwarf HIP 3678 A. [8] NGC 246 is not to be confused with the Rosette Nebula (NGC 2337), which is also referred to as the "Skull." [ 9 ] Among some amateur astronomers, NGC 246 is known as the "Pac-Man Nebula" because of the arrangement of its central stars and the surrounding star field.
It was an object first noted of interest using the IRAS satellite by Fred Gillett and his associates in 1986, as a pointlike light source [d] [16] and its nature was found in 1989 by Gillett et al. [17] The planetary nebula's central star is a blue star. The nebula, designated GJJC1, is likely about only 6,000 years old. [3]