LIFTING THE VEIL
VEIL NEBULA
Stars that reach a violent end and explode in a supernova will often leave behind a scar on the sky – a brightly colored cloud of gas, known as a supernova remnant. The Veil Nebula is one such remnant, stretching out over 110 light-years.
Hubble looked at the Veil Nebula back in 1997, only to return in 2015 when this image was taken. In the intervening years, astronauts had visited Hubble using the Space Shuttle and upgraded the main widefield and planetary camera for a second time. The improved resolution revealed the nebula’s delicate gas filaments in a new level of detail.
The original supernova appears to have exploded just 8,000 years ago (practically yesterday in astronomy terms) and is still expanding. In the 18 years between the first and second images, the cloud has grown in size. Astronomers have been able to pick out these changes, helping to understand how such nebulae evolve.
DUST BUSTER
PISMIS 24
Pismis 24 is just one cluster of stars in a large nebula, NGC 6357. The entire region is home to many young and growing stars, aka protostars. These grow up in thick dust clouds, which hide them from telescopes that can only view the universe at visible wavelengths.
Denne historien er fra July/August 2020-utgaven av Very Interesting.
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Denne historien er fra July/August 2020-utgaven av Very Interesting.
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