- Ok if you could buy today a new laptop what would you prefer:
- Windows or
- and why?
For decades, flower hat jellyfish managed to keep their early lives a secret.
In adulthood, the jellyfish are striking, with a nest of fluorescent tentacles that look like party streamers, but pack a nasty sting. In infancy, well, scientists didn’t know. Aquarists tried, unsuccessfully, to raise the animals in tanks to understand what happens before the jellyfish are fully grown.
"They just aren’t like other jellies," said Wyatt Patry, senior aquarist at the Monterey Bay Aquarium in California.
Now, Patry and colleagues report they’ve finally raised the jellyfish in captivity. In a new paper, the researchers describe the elusive species’ life cycle, from egg to larva to single-tentacled polyp to juvenile to adult.
Scientists at the aquarium first bought a group of flower hat jellies back from Japan in 2002 for an exhibit on jellyfish. At the time, aquarists tried to mate and culture the species (scientifically named Olindias formosus), but they just couldn’t seem to get the jellies to release any sperm or eggs.
Patry said the researchers tried performing in vitro fertilization and exposing the jellies to stresses that might make them release sex cells. The creatures produced some larvae, but they didn’t grow much larger than that stage. Ultimately, it seemed that the scientists were missing some cue the jellyfish needed for reproduction.
When it came time for another jellyfish show in 2012, the team tried again. They kept groups of flower hat jellies in small tanks with mesh netting to keep the creatures off the bottom, where detritus and rotting pieces of half-eaten fish settled. The scientists don’t exactly know what they did right the second time around, but during routine maintenance, they discovered fluorescent jellyfish polyps attached to the wire mesh and glowing under a blue light.
Jellyfish larvae attach themselves to a solid surface and become stalklike polyps, which then bud into juvenile “medusae” — what jellyfish are called when they reach their most recognizable, umbrella-shaped form. Jellyfish polyps persist for an unknown amount of time. The polyps of flower hat jellies were unusual in that they had a single, highly active tentacle.
"They just look like little sea anemones," Patry told Live Science. "They seem to use the tentacle to sweep around their position to capture food."
Patry hopes the new information might help scientists and wildlife managers look for the species in the wild — and predict when and where “blooms” of the jellyfish could affect beachgoers.
Flower hat jellies kill and eat entire fish, and their venom is powerful enough to inflict a painful rash on humans. The mark looks like a burn, said Patry. (Take it from him. He said he usually gets stung a couple of times a year.) A 2007 review of jellyfish incidents recorded around the world found one death associated with flower hat jellies, in Japan in the 1970s.
The findings on young flower hat jellies were published in June in the Journal of the Marine Biological Association of the United Kingdom.
APOD site - other Cat’s Paw Nebula pics:
1) Wide Angle: The Cat’s Paw Nebula by ESO, DSS2 Apr. 21, 2010
2) NGC 6334: The Cat’s Paw Nebula by T. A. Rector (U. Alaska), T. Abbott, NOAO, AURA, NSF Mar. 4, 2008
3) The Cat’s Paw Nebula by Robert Gendler & Martin Pugh Jun. 28, 2006
4) The Cat’s Paw Nebula by Bernd Flach-Wilken & Volker WEndel (Spiegelteam), 2002 Namibia trip
5) The Cat’s Paw Nebula by Jason Ware Dec. 7, 1999
6) NGC 6334:The Bear Claw Nebula by Kathleen Kraemer et al (Boston U.), SPIREX Apr. 6, 1999
(no explanation for the change from Bear Claw in April 1999 and Cat’s Paw later)
Arachnodactyly (“spider fingers”) or achromachia, is a condition in which the fingers are abnormally long and slender in comparison to the palm of the hand. It can be present at birth or develop in later life.
It is also seen in some cases that all or a few fingers can be bent backwards of 180 degrees.
Astronomers have long pondered the origins of enormous elliptical galaxies in the young Universe. An object 11 billion light-years away spotted by the Herschel mission may help unravel the mystery.
Two massive spiral galaxies merged to create a giant elliptical galaxy, which were previously believed to form through the absorption of dwarf galaxies over time.
Anomalocaris group. going clockwise from the lower left, the animals are: Anomalocaris canadensis, Amplectobelua symbrachiata, Hurdia victoria, Opabinia regalis, Kerygmachela kierkegaardi, Schinderhannes bartelsi, Pambdelurion whittingtoni and Laggania cambria.
Lobopods. Clockwise from top: Microdictyon sinicum, Hallucigenia sparsa, Onychodictyon ferox and Aysheaia pedunculata. Note, by the way, that what appear to be “eyes” on Microdictyon, Hallucigenia and Onychodictyon are actually sclerotized armor plates.
…a species of Ophiocomid brittle star which occurs in the waters around the Red Sea, Eastern Africa, and Madagascar. O. scolopendrina are typically present in crevices and under boulders of intertidal reef platforms where they will feed on a the wide variety of small marine invertebrates which are also present there.
Explanation: A star cluster around 2 million years young, M16 is surrounded by natal clouds of dust and glowing gas also known as The Eagle Nebula. This beautifully detailed image of the region includes cosmic sculptures made famous in Hubble Space Telescope close-ups of the starforming complex. Described as elephant trunks or Pillars of Creation, dense, dusty columns rising near the center are light-years in length but are gravitationally contracting to form stars. Energetic radiation from the cluster stars erodes material near the tips, eventually exposing the embedded new stars. Extending from the left edge of the frame is another dusty starforming column known as the Fairy of Eagle Nebula. M16 and the Eagle Nebula lie about 7,000 light-years away, an easy target for binoculars or small telescopes in a nebula rich part of the sky toward the split constellation Serpens Cauda (the tail of the snake).
100 Excellent Questions (Anyone one ask me some now please!)
- 1. If there were one word which was automatically to your name in Google searches, which word would you want it to be?
- 2. What is a goal that you recently met?
- 3. What is your favorite time of day?
- 4. Name a celebrity you find attractive.
- 5. What is one of the best pieces of advice you have ever received?
- 6. What is the ultimate gesture of total trust?
- 7. What is the best compliment you have ever received?
- 8. What is something you have changed your mind about?
- 9. What is something you’ve never changed your mind about?
- 10. Rewrite the end of a fairy tale.
- 11. Choose one: you will never misunderstand the meaning of what someone else is saying OR nobody will ever misunderstand what you say.
- 12. If offered irreversible immortality, would you take it?
- 13. In your opinion, what are the most important qualities of a good friend?
- 14. If you could be a founding member of a space colony, with the caveat that you would never be able to return to Earth, would you go?
- 15. What is your favorite superpower? Why?
- 16. If you were a book, which book would you be?
- 17. If you found out that your life was a book, and you met your author, what would you say to them?
- 18. How would you prefer to die?
- 19. What is your favorite paradox?
- 20. Tell us five facts about your first love, or, if you haven’t had one yet, invent the story of meeting your first love.
- 21. If you could live anywhere for a year, where would you live?
- 22. If you could visit anywhere for a week, where would you go?
- 23. You can only read one genre of books for the rest of your life. Which genre do you read?
- 24. Define “love.”
- 25. Define “justice.”
- 26. Define “truth.”
- 27. Define “art.”
- 28. Define “good.”
- 29. Define “obscene.”
- 30. What one thing in the world would be hardest for you to give up?
- 31. What is one thing you regret?
- 32. What is something that you have done that you are proud of?
- 33. Is it easier to talk or to listen?
- 34. When are you vulnerable?
- 35. If you met God, what would you say to God?
- 36. Would it be harder to tell someone you loved them if you weren’t sure how they would respond, or have to tell someone that you didn’t love them back?
- 37. Excluding romantic love, when was the last time you told someone you loved them? Who were they to you?
- 38. What is your worst quality?
- 39. What is your best quality?
- 40. What is your most immediately noticeable quality?
- 41. What is the first thing you notice about other people?
- 42. Describe one of your closest friends, and explain why that person is such a close friend.
- 43. What happened in the last dream you remember?
- 44. What was your most memorable dream?
- 45. Two truths and a lie.
- 46. If you were having a baby with the love of your life, and they insisted that the child be named after a place, what would you name your child?
- 47. What is the last lie you told?
- 48. Is it possible for you to love someone you don’t trust?
- 49. What motivates you most?
- 50. What is your favorite narrative trope?
- 51. Describe the ultimate dystopia.
- 52. What story (book, movie, game, etc.) have you learned the most from?
- 53. What is something you wish other people could know about you without you having to tell them?
- 54. Describe a moment you experienced something unexpectedly beautiful.
- 55. What is the biggest challenge you face when trying to form relationships with people?
- 56. How close do you think your perception of yourself is to how other people perceive you?
- 57. What is something you used to be afraid of, but aren’t anymore?
- 58. What is the most important emotion?
- 59. Do you think humans are any different than very advanced organic robots? If so, how?
- 60. If you had to move somewhere else, what would you miss most from where you are now?
- 61. If you were a videogame character, what would your iconic weapon be?
- 62. What is an aspect of your personality now that would come as a surprise to your younger self?
- 63. If you could eliminate one event from the last month, which event would it be?
- 64. If you had to forget the entire last year except for one 24 hour period, which day would you chose to remember? (Other people would remember, and you would have anything you wrote down or recorded during that time period - you would just have a form of amnesia.)
- 65. What is the most upsetting thing anyone has ever said to you?
- 66. If you had to pick only one ideal or cause to work toward, what would it be?
- 67. Are there any unforgivable actions? What are they?
- 68. Under what circumstances is keeping information secret acceptable or morally required?
- 69. What is one of your favorite ways to relax?
- 70. What is something you find difficult to talk about, even though you know you should?
- 71. What is an easy, default topic of conversation?
- 72. What is your favorite sort of conversation?
- 73. What is a version of you in an alternate reality doing right now?
- 74. What was the last adorable thing you saw?
- 75. Would you prefer for people to hate you or for people to be completely indifferent to you?
- 76. Would you prefer to be yelled at or ignored?
- 77. What is your favorite word and why?
- 78. What is your dream job?
- 79. What is the most difficult thing you’ve done this month?
- 80. When was the last time you were really scared?
- 81. What do you want most?
- 82. Describe an ideal day.
- 83. If you could speak to any real (non-fictional) person, living or dead for one hour, who would it be?
- 84. In general, are you happy with the person you have become?
- 85. Do you want to be a parent?
- 86. What is something unusual about you that not a lot of people know?
- 87. What makes you you?
- 88. Are you lonelier when you’re with people or when you’re alone?
- 89. What makes you feel safe?
- 90. What was the last bad decision you made?
- 91. Who is someone you have utmost respect for, and what is it about that person that makes you esteem them so highly?
- 92. What was the last thing you laughed uncontrollably at?
- 93. Your friend tells you that they are suicidal, and asks you not to tell anyone. Is it more of a betrayal to tell someone, or to keep silent?
- 94. What song speaks to you most? Why?
- 95. What basic values or principles do you turn to when faced with moral dilemmas?
- 96. If you had a tagline, what would it be?
- 97. If applicable, what do you look for in a romantic partner?
- 98. Who is your favorite author?
- 99. Who is the one person you know who is most similar to you (in terms of personality, beliefs, attitudes, mannerisms, etc)?
- 100. What are you most excited about right now?