What can be learnt from radio astronomy that isn’t revealed in other spectrums of light?
Until about 400 years ago, we were, as human beings, completely blinkered. We didn’t have telescopes. We just had our own eyes and we just had the eyes that have evolved over millions of years of animal evolution on planet Earth. For that reason we can only see a tiny, narrow part of the spectrum. It was only much more recently that we started taking off the blinkers, certainly in the early 20th century. We started to realise there were other types of light that we could gather. And one of those invisible colours is radio waves.
We started to use those radio waves, not just for communication, but to passively receive information from space. Radio waves let you see the invisible. And they also let you find out so many layers of colours that we can’t see. For example, in the middle of our galaxy – the Milky Way – there’s so much dense, dusty gas that is completely black. All of that is hidden from view until we use infrared radiation, or if we use radio waves, and that’s what those different colours can teach us about how hot the gas is, about what it’s made of, what chemicals are up there in space and also the types of physical conditions in the stars.
A lot of the scientific goals of ASKAP are centred around galaxies, whether it’s their evolution, formation or population. What links them?
ãã®èšäºã¯ All About Space ã® Issue 104 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã8,500 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã ?  ãµã€ã³ã€ã³
ãã®èšäºã¯ All About Space ã® Issue 104 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã8,500 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã? ãµã€ã³ã€ã³
"We knew that this would be a historic comet"
Astronomer David Levy was immortalised for his co-discovery of Comet Shoemaker-Levy 9 â its impact with Jupiter 29 years ago held the world in awe
CELESTRON STARSENSE EXPLORER DX 102AZ
Innovative technology provides the simplest and quickest solution yet to finding objects to observe, and this instrument will be very popular with beginners
MOON TOUR - COPERNICUS
Get up close to the âMonarch of the Moonâ
A HUNGRY BLACK HOLE 'SWITCHES ON' AS ASTRONOMERS WATCH IN SURPRISE
J221951 is one of the most extreme examples yet
MYSTERIES OF THE UNIVERSE - WHY DOES JUPITER CHANGE COLOUR?
For years, scientists have tried to work out why Jupiterâs bands frequently move and change colour. Now they believe theyâve found the answer
MARS HELICOPTER PHONES HOME AFTER A 63-DAY SILENCE
Rugged terrain had kept Ingenuity from communicating with its robotic partner, the Perseverance rover
SIX OF THE BEST SPACE PRANKS
It turns out that the sky isnât the limit when it comes to a good old-fashioned practical joke
CLIMATES CHANGE IN THE SOLAR SYSTEM
Alongside Earth, our planetary neighbourhood is changing. But not for the betterâŠ
TIME APPEARED TO MOVE FIVE TIMES SLOWER IN THE FIRST BILLION YEARS AFTER THE BIG BANG
Time dilation, brought about by the relativistic expansion of space, has resulted in the observed slowing of âclocksâ in the early universe
WHAT CAN WE DO WITH A CAPTURED ASTEROID?
Asteroids could provide us with rare resources