Dave Lane
02-02-2012, 09:54 AM
The Hubble Space Telescope's "Pillars of Creation" picture is arguably the best-known astronomical image of the 20th century, but can you spot the pillars in the 21st-century version? Those well-known towers of gas and dust are dwarfed by the full majesty of the Eagle Nebula in a view that's based on far-infrared observations from the European Space Agency's Herschel Space Observatory, plus X-ray readings from the XMM-Newton probe.
The Eagle Nebula, 6,500 light-years away in the constellation Serpens, is one of the closest cradles of starbirth. Radiation from a young star cluster known as NGC 6611 is blasting away at the surrounding pillars of gas and dust —and sparking new star systems inside clumps known as evaporating gaseous globules, or EGGs.
Hubble's visible-light image, captured in 1995, showed the pillars in detail. It also provided an iconic image of cosmic structure for ages to come. But it couldn't reveal exactly what was inside the EGGs' dusty sheaths.
In 2001, a near-infrared image from the ISAAC instrument, at the European Southern Observatory's Very Large Telescope facility in Chile, cut through the dust and revealed some of the infant stars within their EGGs.
Researchers determined that 11 of the 73 EGGs in the Hubble image clearly had stars associated with them. Only one of these stars had been previously been seen in the Hubble images, and another five EGGs were noted as possibly containing stars.
The new far-infrared view from Herschel provides even more detail about the structure of the pillars and the young stars within. Meanwhile, the view from XMM-Newton highlights the points of strong X-ray emission within the nebula. The European Space Agency says the new imagery supports the view that one of the stars in the NGC 6611 clusters went supernova, sending out a shock wave that is about to tear the pillars apart.
In fact, it's probably already happened — but because of the distance separating us from the nebula, we just haven't seen it yet. Astronomers expect that we'll witness the destruction of the Pillars of Creation sometime in the next few hundred years. So enjoy the view while you can.
Could you make out the pillars ?
The Eagle Nebula, 6,500 light-years away in the constellation Serpens, is one of the closest cradles of starbirth. Radiation from a young star cluster known as NGC 6611 is blasting away at the surrounding pillars of gas and dust —and sparking new star systems inside clumps known as evaporating gaseous globules, or EGGs.
Hubble's visible-light image, captured in 1995, showed the pillars in detail. It also provided an iconic image of cosmic structure for ages to come. But it couldn't reveal exactly what was inside the EGGs' dusty sheaths.
In 2001, a near-infrared image from the ISAAC instrument, at the European Southern Observatory's Very Large Telescope facility in Chile, cut through the dust and revealed some of the infant stars within their EGGs.
Researchers determined that 11 of the 73 EGGs in the Hubble image clearly had stars associated with them. Only one of these stars had been previously been seen in the Hubble images, and another five EGGs were noted as possibly containing stars.
The new far-infrared view from Herschel provides even more detail about the structure of the pillars and the young stars within. Meanwhile, the view from XMM-Newton highlights the points of strong X-ray emission within the nebula. The European Space Agency says the new imagery supports the view that one of the stars in the NGC 6611 clusters went supernova, sending out a shock wave that is about to tear the pillars apart.
In fact, it's probably already happened — but because of the distance separating us from the nebula, we just haven't seen it yet. Astronomers expect that we'll witness the destruction of the Pillars of Creation sometime in the next few hundred years. So enjoy the view while you can.
Could you make out the pillars ?