Inseparable galactic twins

Looking towards the constellation of Triangulum (The Triangle), in the northern sky, lies the galaxy pair MRK 1034. The two very similar galaxies, named PGC 9074 and PGC 9071, are close enough to one another to be bound together by gravity, although no gravitational disturbance can yet be seen in the image. These objects are probably only just beginning to interact gravitationally.
Both are spiral galaxies, and are presented to our eyes face-on, so we are able to appreciate their distinctive shapes. On the left of the image, spiral galaxy PGC 9074 shows a bright bulge and two spiral arms tightly wound around the nucleus, features which have led scientists to classify it as a type Sa galaxy. Close by, PGC 9071 — a type Sb galaxy — although very similar and almost the same size as its neighbour, has a fainter bulge and a slightly different structure to its arms: their coils are further apart.
The spiral arms of both objects clearly show dark patches of dust obscuring the light of the stars lying behind, mixed with bright blue clusters of hot, recently-formed stars. Older, cooler stars can be found in the glowing, compact yellowish bulge towards the centre of the galaxy. The whole structure of each galaxy is surrounded by a much fainter round halo of old stars, some residing in globular clusters.
Gradually, these two neighbours will attract each other, the process of star formation will be increased and tidal forces will throw out long tails of stars and gas. Eventually, after maybe hundreds of millions of years, the structures of the interacting galaxies will merge together into a new, larger galaxy.

Image credit: ESA/Hubble & NASA; Acknowledgement: Judy Schmidt

Inseparable galactic twins

Looking towards the constellation of Triangulum (The Triangle), in the northern sky, lies the galaxy pair MRK 1034. The two very similar galaxies, named PGC 9074 and PGC 9071, are close enough to one another to be bound together by gravity, although no gravitational disturbance can yet be seen in the image. These objects are probably only just beginning to interact gravitationally.

Both are spiral galaxies, and are presented to our eyes face-on, so we are able to appreciate their distinctive shapes. On the left of the image, spiral galaxy PGC 9074 shows a bright bulge and two spiral arms tightly wound around the nucleus, features which have led scientists to classify it as a type Sa galaxy. Close by, PGC 9071 — a type Sb galaxy — although very similar and almost the same size as its neighbour, has a fainter bulge and a slightly different structure to its arms: their coils are further apart.

The spiral arms of both objects clearly show dark patches of dust obscuring the light of the stars lying behind, mixed with bright blue clusters of hot, recently-formed stars. Older, cooler stars can be found in the glowing, compact yellowish bulge towards the centre of the galaxy. The whole structure of each galaxy is surrounded by a much fainter round halo of old stars, some residing in globular clusters.

Gradually, these two neighbours will attract each other, the process of star formation will be increased and tidal forces will throw out long tails of stars and gas. Eventually, after maybe hundreds of millions of years, the structures of the interacting galaxies will merge together into a new, larger galaxy.

Image credit: ESA/Hubble & NASA; Acknowledgement: Judy Schmidt

  1. izshath reblogged this from distant-traveller
  2. thrusters-on-full reblogged this from distant-traveller
  3. yourgirljuanita reblogged this from karlawinniethepooh
  4. karlawinniethepooh reblogged this from spacesightings
  5. spacesightings reblogged this from distant-traveller
  6. rainelinde reblogged this from ramainen-elvie
  7. ramainen-elvie reblogged this from distant-traveller
  8. stellar-cartographer reblogged this from exploring-outer-space
  9. josaiditfoso reblogged this from cumcocaine
  10. cumcocaine reblogged this from exploring-outer-space
  11. blunthitsandpowertrips reblogged this from lucifersshroud
  12. moderatelyinterestingweirdo reblogged this from exploring-outer-space
  13. exploring-outer-space reblogged this from starstuffblog
  14. starstuffblog reblogged this from distant-traveller
  15. kidl3jin reblogged this from goldfacethrillah
  16. mrwagstaff reblogged this from distant-traveller
  17. jimmyfuckitup reblogged this from distant-traveller
  18. boreasss reblogged this from distant-traveller
  19. settle---d0wn reblogged this from xdeangelisx
  20. unmovinggreatlibrary reblogged this from distant-traveller
  21. comrade-sagan reblogged this from distant-traveller
  22. pomegranatesandblackberries reblogged this from distant-traveller
  23. idontgiveafuckeither reblogged this from distant-traveller
  24. chel-inspace reblogged this from distant-traveller
  25. xdeangelisx reblogged this from distant-traveller
  26. goldfacethrillah reblogged this from distant-traveller
  27. thelostbaeddel reblogged this from distant-traveller
  28. lucifersshroud reblogged this from izzy-the-villain
  29. righthonourablelordmayor reblogged this from distant-traveller
  30. izzy-the-villain reblogged this from distant-traveller

Theme NIGHTNIGHT by DEDDY

Hit Counter