时间:2019-01-02 作者:英语课 分类:(科普英语)Earth and Sky


英语课



Harvest Moon 秋分前后之满月

Right now, as seen from the northern hemisphere, the ecliptic -- or path of the sun, moon and planets -- makes a narrow angle with the evening horizon. Learn more about the ecliptic -- and the Harvest Moon -- today on Earth and Sky..

DB: This is Earth and Sky -- Saturday, September 21. A listener asks, "Is the Harvest Moon bigger because it's closer to Earth than other full moons?"

JB: The answer is no -- the Harvest Moon isn't bigger or brighter or yellower or closer than other full moons. All full moons appear extra big just after rising, when they're still low in the sky. This is an illusion, which astronomers 1 call the "moon illusion."

DB: Meanwhile, the Harvest Moon is just one of many names for the full moon -- in this case, it's the full moon closest to the September equinox. The equinox is tomorrow or the next day -- depending on your time zone. So tonight's full moon is the Harvest Moon.

JB: The moon usually rises about 50 minutes later each day -- but at this time of year, in the northern hemisphere, the full moon rises around the time of sunset for several evenings in a row. In the southern hemisphere, the opposite is true. There's an extra long time between moonrises there. In both cases, the reason is the angle of the ecliptic -- or path of the sun, moon and planets.

DB: From the northern hemisphere now, the moon looks entirely 2 or nearly full for several evenings in a row -- as though September is a month with several full moons -- and with several chances to see the moon illusion. Maybe that's where the idea of the extra big size of the Harvest Moon came from.

JB: Special thanks today to Research Corporation -- a foundation for the advancement 3 of science. We're Block and Byrd for Earth and Sky.


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。
n.前进,促进,提升
  • His new contribution to the advancement of physiology was well appreciated.他对生理学发展的新贡献获得高度赞赏。
  • The aim of a university should be the advancement of learning.大学的目标应是促进学术。
学英语单词
a.t.p.s
accelerated erosion
agter sneeuberg
Albanese, Licia
alexandrine verse
all-purpose adhesive
antibot
Arabizes
asbestos waterproof felt
az zarbah
be not so black as one is painted
bederson
benoxafos
Billerbeck
Bishop Berkeley
breakover device
brine headtank
butacarb
butter-slide
cadie
camaroptera
capitals of sudan
cavatappi
convenience-store
corhormone
cvnis
drop-out voltage
dry bag pressing
dugglebies
eccrine epithelioma
epipsammic
fixed-crest weir
flax silk
flourishings
foundereth
Fox message.
gallivant around
gang potentiometer
gelatinous curd
glues
glycerol starch composition
grid generated turbulence
Gumprecht's shadow
iesu
intercarotic glandular tumor
jew-fish
kill shot
kinsmen by affinity
klassens
laser squib
linear processor
macroprocessing
mandibulata mouth parts
marking the close
mat geophytes
memoscope programme
Modified pass-throughs
moon-biedl syndrome
mooring head pitch bearing
multiphoton excitation
Nadymskiy Rayon
Nation, Carry Amelia Moore
near infrared laser
necessary-sufficient
ninhydrin
noldes
nonimpregnanted
NSC-178248
Nukhayb
observatory clock
oval head semi tubular rivet
Paloich
parkable
pgce conversion
phthorimaea operculella (zeller)
polished surface
port-bouet (port buet)
portulacas
preliminary engineering
quadratic root
quarter-pounders
red lens test
refactorizing
rinv
safety strip
Sancho I
screwed something up
sea borne trade
secorndary oucleolus
sector interleave
silage cutter-blower
stigmatic concave grating
stigmatizer
sun-tanning
supersonic boom
tantalpyroclore
three stages fluidized-bed dryer
urate cast
voltage overshoot
wavelike
XDIS.
Zodopinum