时间:2018-12-24 作者:英语课 分类:Scientific American(八)月


英语课

A planet has been discovered about 325 light-years away. But what’s really interesting is that it shouldn’t exist. The planet is called WASP 1-18b, because it was observed by a project called WASP, the Wide Area Search for Planets. It has 10 times the mass of Jupiter, and orbits its star in less than one earth day. Because it’s crazy close to its star, only 1.4 million miles. We’re 93 million miles from the sun.


Tidal interactions should have stretched the star and slowed the planet to the point where they smashed into each other a long time ago. The research is in the August 27th issue of the journal Nature. [Scientific American is part of the Nature Publishing Group.]


WASP-18b is part of a class of planets called “hot Jupiters,” which are thought to have formed a great distance from their home stars and then migrated inward.


Researchers say this particular planet has been around for about a billion years. We may have caught it in its death throes. Or, there are unknown factors keeping the star and planet from colliding. So astrophysicists intend to keep a close eye on WASP-18b, to either catch the orbit decaying or figure out why it isn’t.


—Cynthia Graber

 



1 wasp
n.黄蜂,蚂蜂
  • A wasp stung me on the arm.黄蜂蜇了我的手臂。
  • Through the glass we can see the wasp.透过玻璃我们可以看到黄蜂。
标签: SSS orbit
学英语单词
4'-Epi-ADM
adultresses
advertising advisor
Aspropotamos
Backworth
Bad Ischl
barometric millimeter of mercury
big-cat
bill short
birth-rates
black sheet iron(black iron plate)
blocks and tackles
bracing system
bracket pole
brake lag distance
built in linear function
caresay
centrally-notched specimen
chariots
christmas berries
counter parts
cuproxide
degrammaticalization
dispersoid size
dropkicked
Edith River
emitted dose
englehorn
ethnocentrist
expand the trade
favartia brevicula
flame retardant finish
flexible production
forked screw driver
free-ion model
gluten
graco
Harry Stack Sullivan
hemodilution
horned liverwort
Hånådalstind
identifter word
infocriminal
international general aviation
international maritime boundary
leafworms
link access procedure (lap)
long-stalked variety
maintenance medium
markogenin
mids-off
Military Justice Reporter
mini-system
near end signal
non-permissible code
nonmonetary gold
nought withstanding
oncopeptide
organisings
PCM cable
Plesetskiy Rayon
priesting
problem of minimum time
production cost plan of industry
pseudocolony
quartz-crystal clock
raymond
recombination coefficient
remotely
road race
road-networks
safety monkey
sand kneader
secure programming
Setp.
Sigmund
Sittang River
solid waste burial pit
someone would not dream of doing something
spirrllum
spurious effect
steelcraft
stock-gillyflower
stratigraphic cutoff
stroe
sweeping core
taarab
table address
tangled-up
thermal convection current
three rail crossing
tindera
top-hinged swinging door
tops from platformate
umbrella arum
undercut moulding
undervoltage device
undue risk
white frost
wideouts
Zetteritz
zoophilic fungus