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Australian telescope used to broadcast live vision of man¡¯s first steps
on the moon in 1969 has found hundreds of new galaxies hidden behind the
Milky Way by using an innovative receiver that measures radio waves.
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¡¡¡¡Scientists at the Parkes telescope, 355 km (220 miles) west of Sydney,
said they had detected 883 galaxies, a third of which had never been
seen before. The findings were reported in the latest issue of
Astronomical Journal under the title ¡®The Parkes HI Zone of Avoidance
Survey¡¯.
¡¡¡¡ÌìÎÄѧ¼Ò³ÆÀûÓÃÕą̂λÓÚϤÄáÎ÷²¿355km(220Ó¢Àï)µÄParkesÍûÔ¶¾µÒѾ̽²âµ½883¸öÐÂÐÇϵ£¬ÆäÖÐÈý·ÖÖ®Ò»µÄÐÇϵ֮ǰûÓб»Ì½²âµ½¹ý¡£ÕâЩ³É¹û±»·¢±íÔÚ×îÐÂÒ»ÆÚµÄÌìÎÄѧÔÓÖ¾ÉÏ£¬ÌâÄ¿ÊÇ¡°Ó¦ÓÃParkesÍûÔ¶¾µ½øÐÐHIÒþ´øµÄÑо¿¡±¡£
¡¡¡¡¡°Hundreds of new galaxies were discovered, using the same telescope
that was used to broadcast the TV pictures from Apollo 11,¡± said Lister
Staveley-Smith, a professor at the University of Western Australia¡¯s
International Centre for Radio Astronomy Research.
¡¡¡¡À´×ÔÎ÷°Ä´óÀûÑÇ´óѧµÄÎÞÏßµçÌìÎÄѧ¹ú¼ÊÑо¿ÖÐÐĵĽÌÊÚLister
Staveley-Smith³Æ£º¡°ÕâÌ¨ÔøÏòÈËÀàÖ±²¥°¢²¨ÂÞ11ºÅµÇÔÂ»ÃæµÄÍûÔ¶¾µ°ïÖúÎÒÃÇ·¢ÏÖÁËÊýÒ԰ټƵÄÐÂÐÇϵ¡±¡£
¡¡¡¡¡°The electronic technology at the back end is substantially different
and that is why we can still keep using these old telescopes,¡± he said.
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¡¡¡¡The discoveries occurred as the scientists were investigating the
region¡¯s close proximity to the Great Attractor, a gravity anomaly in
intergalactic space.
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¡¡¡¡The Great Attractor appears to be drawing the Milky Way towards it
with a gravitational force equivalent more than two million km per hour
(1.24 million mph).
¡¡¡¡¾ÞÒýÔ´ÔÚÒýÁ¦×÷ÓÃÏÂÊ¹ÒøºÓÏµËÆºõÒÔ200Íò¹«ÀïÿСʱ£¨124ÍòÓ¢ÀïÿСʱ£©µÄËÙ¶ÈÏòÆä¿¿½ü¡£
¡¡¡¡Using radio waves has allowed scientists to see beyond dust and stars
in the Milky Way that had previously blocked the view of telescopes, the
study showed.
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¡¡¡¡Staveley-Smith, the lead author on the Astronomical Journal, said
scientists have been trying to get to the bottom of the mysterious Great
Attractor since major deviations from universal expansion were first
discovered in the 1970s and 1980s.
¡¡¡¡ÕâÆªÌìÎÄѧÎÄÕµĵÚÒ»×÷ÕßStaveley-Smith±íʾ£¬×Ô´Ó¶þÊ®ÊÀ¼ÍÆß°ËÊ®Äê´úÊ״η¢ÏÖÓîÖæ´ó±¬Õ¨ºóµÄÖØ´óÆ«²îÒÔÀ´£¬ÌìÎÄѧ¼ÒÒ»Ö±ÔÚŬÁ¦Ì½Ñ°ÉñÃØ¾ÞÒýÔ´µÄÕæÊµÃæÄ¿¡£
¡¡¡¡¡°It¡¯s a missing part of the jigsaw puzzle, which is the structure of
our local universe,¡± said Michael Burton, a professor at the University
of New South Wales¡¯ Physics School.
¡¡¡¡ÐÂÄÏÍþ¶ûÊ¿´óѧÎïÀíѧԺµÄ½ÌÊÚMichael Burton±íʾ£º¡°ÕâЩ·¢ÏÖÊÇÎÒÃǵÄÓîÖæ¹¹ÔìÆ´Í¼ÖÐȱʧµÄÒ»¿é¡±¡£
¡¡¡¡¡°They have managed to pierce through it and complete the picture of
what our part of the universe looks like.¡±
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