The polar ring galaxy may actually be two galaxies that are gravitationally pulled together. When this happens, an unusual ring of gas and stars rotate around the poles of what appears to be a single galaxy, as captured in this image.
NGC 2685 is a confirmed polar ring galaxy - a rare type of galaxy with stars, gas and dust orbiting in rings perpendicular to the plane of a flat galactic disk. The bizarre configuration could be caused by the chance capture of material from another galaxy by a disk galaxy, with the captured debris strung out in a rotating ring. Still, observed properties of NGC 2685 suggest that the rotating ring structure is remarkably old and stable. In this sharp view of the peculiar system also known as Arp 336 or the Helix galaxy, the strange, perpendicular rings are easy to trace as they pass in front of the galactic disk, along with other disturbed outer structures. NGC 2685 is about 50,000 light-years across and 40 million light-years away in the constellation Ursa Major.
Image credit: NASA
The way that you think about stress can actually transform the effect that it has on you – and others.
- Stress is contagious, and the higher up in an organization you are the more your stress will be noticed and felt by others.
- Kelly McGonigal teaches "Reset your mindset to reduce stress" for Big Think Edge.
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Explore a legendary philosopher's take on how society fails to prepare us for education and progress.
- Alan Watts was an instrumental figure in the 1960s counterculture revolution.
- He believed that we put too much of a focus on intangible goals for our educational and professional careers.
- Watts believed that the whole educational enterprise is a farce compared to how we should be truly living our lives.
How can we use the resources that are already on the Moon to make human exploration of the satellite as economical as possible?
If you were transported to the Moon this very instant, you would surely and rapidly die. That's because there's no atmosphere, the surface temperature varies from a roasting 130 degrees Celsius (266 F) to a bone-chilling minus 170 C (minus 274 F). If the lack of air or horrific heat or cold don't kill you then micrometeorite bombardment or solar radiation will. By all accounts, the Moon is not a hospitable place to be.
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