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- Edwin Hubble
- revolutionised
- our understanding
- of the universe.
- His observation
- that galaxies are
- moving away
- from earth meant
- two things - that
- the universe was
- expanding and
- that, by working
- backwards, it was
- therefore possible
- to calculate when
- the universe began
- #
- Remarkably for one
- of the century's
- great scientists,
- Hubble trained as
- a lawyer: he took a
- degree in law at
- Oxford University,
- and went back to
- the US to practise.
- But he gave up law
- to do research
- into astronomy
- #
- Viewed through
- conventional
- telescopes, the
- stars seem to be
- surrounded by
- shining clouds of
- gas, called nebulae.
- By using the big-
- gest telescopes
- available, Hubble
- found that the
- nebulae were
- actually masses of
- faint stars, thus
- proving that other
- star systems - or
- galaxies - exist
- #
- Using more and
- more powerful
- telescopes, Hubble
- discovered further
- galaxies - and the
- astonishing fact
- that the further
- away a galaxy was
- from earth, the
- quicker it was
- travelling. This
- meant that the
- universe must
- still be expanding
- #
- During Hubble's
- lifetime, space
- travel was not
- possible: the only
- way to know about
- the cosmos was
- to look at it from
- the earth. This is
- still the most
- efficient method,
- despite advances
- in space explor-
- ation. The Hubble
- Telescope, in earth
- orbit, sees further
- than any spacemen
- will ever travel
- #
- Hubble, and the
- telescope named
- after him, have
- reminded us of
- our place in the
- universe: we are
- a tiny speck on
- the far rim of an
- ordinary galaxy,
- undistinguishable
- from countless
- others. The cosmos
- is unaware of our
- presence, and will
- always be so
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