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
abbondanza
acceleration from rest
accidental resemblance
activator-dissociation system
aeacides
Alma Center
araucaria families
atmospheric-pressure counter
attached storage
average information matrix
bending length
boatswain's chair
charle's law
corrosive bittern brine
database indexed search
deteriorative change
dielectric drier
divcom
Dunaujvaros
electromagnetic starter
exogastric
exoperidium
external fixation of fracture
farceuses
filipe
flagellants
floating sleeve
foul-air flue
freelancers
ftn
Fūlādābād
goucher
hand sth round
hobits
hot secondary air
if i live to be a hundred
in stereo
in the schools
internal transference
lifespeed
limiting power
liquid-solid cyclone
low roller
Madeleine, Monts.de la
maholi
midget socket
minimum-delay coding
minispread
mode expander
modifier formula
network intrusion detection systems
non-reciprocal trade preference
Nordurandron
of fixation line
oil-bearing sand
Oxypinone
peachblow
phancifull
photo opportunist
piping bag
planetary spacecraft
potestatems
ppes
Primula sinuata
prober interface
qualitative description
quantized interval
quiet arc
rodnina
sampled data computer
scinaia pseudojaponica
scollon
secure against
self-incriminations
sensitizing dose
sound profile
stomias nebulosus
storage economy
stretchless
sun si-miao
syntaxical
systematic fashion information
tachyglossid
the cultivation of tress
the Sons of the Revolution
thorium halide
three graces
top-end
tunicae vagfnalis propria testis
turn of winding
Ubon Ratchathani, Changwat
unipoint
unstable frame
virtual channel link
watergas
Wawasee, L.
wedge dislocation
wing-tip
word load
yuen long
zilberstein