Yes, the aurora borealis can be described as a natural phenomenon of electromagnetic radiation. It occurs when charged particles from the sun interact with the Earth's magnetic field, causing the particles to emit light as they collide with gases in the Earth's atmosphere. This light emission is a form of electromagnetic radiation that is visible as colorful displays in the sky, commonly known as the northern lights. **

The prices for a tropical island resort can vary widely depending on the location, amenities, and time of year. Generally, a luxury tropical island resort can range from $300 to $1000 per night for a standard room, while overwater bungalows or private villas can cost upwards of $1000 per night. All-inclusive packages may also be available, which can include meals, drinks, and activities, and can range from $500 to $2000 per night. It's important to research and compare different resorts to find the best option for your budget and preferences. **

Yes, 90s fashion, sunglasses, and swimwear have made a comeback in recent years. Many fashion trends from the 90s, such as high-waisted jeans, crop tops, and slip dresses, have become popular again. Additionally, 90s-inspired sunglasses, such as small oval frames and colored lenses, have become trendy once more. As for swimwear, high-cut one-piece swimsuits and retro bikini styles reminiscent of the 90s have also become popular choices. Overall, 90s fashion, sunglasses, and swimwear have definitely made a comeback in the fashion world. **

Yes, it is highly recommended to apply sunscreen when exposed to the sun. Sunscreen helps protect the skin from harmful UV rays that can cause sunburn, premature aging, and skin cancer. It is important to apply sunscreen even on cloudy days as UV rays can still penetrate through the clouds. Reapplying sunscreen every two hours, especially after swimming or sweating, is also crucial for continued protection. **

Yes, you should apply sunscreen when you are in the sun. Sunscreen helps protect your skin from harmful UV rays that can cause sunburn, premature aging, and skin cancer. It is important to apply sunscreen generously and reapply it every two hours, especially if you are swimming or sweating. Using sunscreen is a crucial step in maintaining healthy skin and reducing the risk of sun damage. **

As an AI, I don't have personal preferences, but I can provide some considerations. If you prefer a relaxing beach vacation with warm weather and beautiful ocean views, a tropical island resort would be the ideal option for you. On the other hand, if you enjoy thermal baths, saunas, and a variety of water attractions, then Therme Erding, one of the largest thermal bath complexes in Europe, would be a great choice. Ultimately, the decision depends on your personal preferences and the type of vacation experience you are looking for. **

Sunscreen typically provides better protection than sun lotion. Sunscreen contains specific ingredients that help to block or absorb harmful UV rays, providing a higher level of protection against sunburn and skin damage. Sun lotion, on the other hand, may not offer the same level of protection and may need to be reapplied more frequently. It is important to choose a broad-spectrum sunscreen with a high SPF for optimal protection against both UVA and UVB rays. **

To combine sun oil with sunscreen, start by applying a generous amount of sunscreen to your skin, making sure to cover all exposed areas. Then, wait a few minutes for the sunscreen to absorb into the skin. Next, apply the sun oil on top of the sunscreen, focusing on areas that could use extra hydration and glow, such as the shoulders, arms, and legs. Gently massage the sun oil into the skin until it is fully absorbed. This combination will provide both sun protection and nourishment for your skin. **