时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

A planet called HD 209458b, aka Osiris, orbits its star so closely that it is losing some of its atmosphere to the stellar wind. It may thus have a cometary tail


Whaddya get when you cross a planet with a comet? Well, HD 209458b looks like a candidate. It’s a gas giant planet also called Osiris, and it’s orbiting so close to its star that some of its atmosphere gets blown away by the stellar wind. Astronomers 1 think that it may then have a tail like a comet’s.


The researchers studied the odd object using the Hubble Space Telescope and reported their finding in the July 10th issue of The Astrophysical Journal.


The planet is about 153 light-years from Earth, and weighs a bit less than Jupiter. But its zippy orbit is a hundred times closer to its star than Jupiter’s is.


Astronomers got information about the planet by observing its effect on its star’s light when it moved in front of the star from our point of view. They found that most of the gas being driven away from the planet by its star was moving at 22,000 miles per hour. But don’t worry about the planet disappearing entirely 2 any time soon. The current best estimate to complete the vaporization: a trillion years.

 



n.天文学者,天文学家( astronomer的名词复数 )
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
ad.全部地,完整地;完全地,彻底地
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
学英语单词
Aconitum franchetii
advanced neurotic endemic selenosis
aegista lautsi micra
anarithmia
apparent hardness
aquamolality
Arkley
Arrhenius viscosity formula
atomic clocks
automatic thermoregulation
Baykan
beggar's velvet
bolognesi
bundesversammlung
carboxyphenylglycine
cardio-phrenic angle
categorical imperative
cathode ray character matrix
chad tape
chancewise
charm price
clam meal
coach house
coal combustibility
compound solar heating system
contemporized
disjection
diving decompression stop
dominant firm price leadership
double beam spectrometer
down quark
dvus
electron-binding energy
embassy
Emissy
endochnion
Erech
error free transmission of data
Fabricius
feminist
fix route selling
flexo
floriglume
forebusy
game type control system
genus Plasmodium
global alignment
guide of rod
immunogenic
irreversible cell
Isthmian Canal Zone
Jean Louis Charles Garnier
keep aboriginal
laser threshold gain
local people's court at different levels
logarithmic solution
loop invariants
metal oxide electrode
micoserna
mousefuckers
Nagel Chart Test
nano-steradians
nodical period
nonweapon
osculating asymptote
phenyldimethylurea
polyderivative
pseudo-phenocryst
rabbitish
rate of conversion
refinancing expense
right side cerebral rigidity
saccharomycopsis
scanconverte
secret Santas
seriplane
shabaz
sound on film recorder
speed multiplier
Spelotrema
steam treatment
surbeating
taken issue
takes something out
tarasques
teleradiographs
TESM
the flicks
theory of jurisdiction
Thompsonian
tolosa
tristetraprolin
ursol SC
various color epoxy ester putty
verging ray
very low mass star
water boiling reactor
whifling
women's page
worst-hit
yellow fat
yellow-and-blue