内容摘要：One of the vigil’s organizers, who went by the name Mimi for fear of repercussions, said some may question why people born years after the 1989 protests still care.

One of the vigil’s organizers, who went by the name Mimi for fear of repercussions, said some may question why people born years after the 1989 protests still care.

“Although all hearing aids are amplifiers, not everybody needs the same thing,” says Bachmann. “Fitting a hearing aid is an art. It changes the acoustics, and everyone is different. You want someone who listens to your lifestyle needs. Do you have a lot of difficulty with noise? Are you mostly in quiet situations? How much technology do you need, and what kind?”Greta Stamper, an audiologist at the Mayo Clinic in Jacksonville, Florida, agrees. “Hearing loss is not a one-time thing. It’s a chronic health condition. It should be a partnership between you and your audiologist,” she said. “It’s someone asking you what you’re looking for and how it’s going. You shouldn’t feel pressured or pushed.”

3. A note on cost. Although hearing aids can be pricey, there are affordable options, and a good audiologist should be able to let you try out options at several price points. Insurance often covers much of the cost, and there are ways to pay for the remaining cost in installments. Also, avoidance has pretty high costs as well, audiologists say, and the longer the wait, the harder it may be to solve the problem with a hearing aid. Although there are cheaper hearing aids at big box stores, Bachmann warns that it’s good to check with your audiologist before taking that route. “Some of those hearing aids are locked, so that you’re not allowed to have them programmed by an outside audiologist,” she says.Remember, says Stamper, that hearing aids are an investment, and usually last between five and six years.4. Know your rights. “We select what is the most likely to be successful, and if it doesn’t work out you come back and do something else,” says Stamper. She said most states mandate a trial period. In some cases, hearing-aid companies also cover the cost of multiple visits to your audiologist while you are getting used to your new hearing aid and get training in how to use and maintain it.

5. Embrace the process, and expect it to take a little time and a few expert tweaks. Audiologists say your brain needs time to adjust to a hearing aid, and that hearing-aid settings should be adjusted little by little as your brain adapts to them.“A big misconception is that you can just wear them a couple hours a day. Your brain does better with it if you use them most of the day. Your brain needs to adapt to hearing sounds it hasn’t heard for a while, and it takes the brain awhile to relearn how to process all those sounds,” says Stamper.

6. Be realistic. “Although hearing aids can be enormously beneficial, they may not give you back your normal hearing,” says Stamper. Depending on the situation, there might be limitations to what a hearing aid can do.

“It might just be lots of improvement in the key areas in which you’re struggling,” said Stamper.“Why is there a spiral there?” said Jackie Faherty, an astrophysicist who leads the museum’s educational programs and helped put together the planetarium show.

The inner section of the Oort Cloud, made of billions of comets, resembled a bar with two waving arms, similar to the shape of our Milky Way galaxy.Scientists had long thought the Oort Cloud was shaped like a sphere or flattened shell, warped by the push and pull of other planets and the Milky Way itself. The planetarium show hinted that a more complex shape could lie inside.

The museum contacted the researcher who provided the Oort Cloud data for the show, who was also surprised to see the spiral.“It’s kind of a freak accident that it actually happened,” said David Nesvorny with the Southwest Research Institute.