No, the Earth will not become lighter. The total mass of the Earth remains constant, as matter cannot be created or destroyed. While there may be fluctuations in the distribution of mass due to natural processes like volcanic eruptions or meteorite impacts, the overall mass of the Earth will not change. **

Yes, science fiction technology could become real in the future. Many of the technological advancements that were once considered science fiction, such as video calling, self-driving cars, and virtual reality, have already become a reality. With continued advancements in science and technology, it is possible that other futuristic technologies, such as teleportation or advanced artificial intelligence, could also become a reality in the future. While some science fiction technologies may still be far-fetched, it is important to remember that many of today's realities were once considered impossible in the past. **

The whole earth becoming nonviolent is a challenging but not impossible goal. It would require a shift in societal values, education, and governance towards peaceful conflict resolution and empathy. It would also require addressing systemic issues such as poverty, inequality, and discrimination. While achieving a completely nonviolent world may be difficult, progress can be made through individual and collective efforts to promote peace and justice. **

While it is difficult to predict the future of technology, it is unlikely that we will see the exact same virtual reality technology as depicted in Sword Art Online. The concept of a fully immersive virtual world where players can physically feel sensations and emotions is currently beyond our technological capabilities. However, advancements in virtual reality technology are constantly being made, so we may see more sophisticated and immersive VR experiences in the future. **

To become a captain in civilian maritime navigation, one typically needs to obtain a bachelor's degree in marine transportation or a related field. After completing their education, individuals must gain practical experience by working as a deck officer on a ship and obtaining the necessary sea time and endorsements. They also need to pass the required examinations and obtain the necessary certifications, such as a Merchant Mariner Credential and a US Coast Guard license. Additionally, aspiring captains may need to complete additional training and obtain specialized certifications depending on the type of vessel they want to operate. **

No, the Earth does not become heavier due to solar energy. Solar energy is in the form of electromagnetic radiation that reaches the Earth from the Sun. This energy is absorbed by the Earth and its atmosphere, but it does not add any significant mass to the planet. The Earth's weight is primarily determined by its mass, which remains constant unless there is a significant change in the amount of material added to or removed from the planet. **

Becoming a down-to-earth person involves being genuine, humble, and approachable. It requires being open-minded, empathetic, and respectful towards others. One can become a down-to-earth person by practicing self-awareness, being mindful of their actions and words, and treating others with kindness and understanding. It also involves being grounded, having a realistic perspective on life, and being willing to connect with others on a genuine level. **

The online speed may have become slower due to various factors such as increased internet traffic, network congestion, outdated hardware or software, and limitations of the internet service provider. With more people working and studying from home, there is a higher demand for internet bandwidth, leading to slower speeds. Additionally, if the infrastructure supporting the internet connection is outdated or overloaded, it can result in slower speeds for users. It is important for users to troubleshoot their own network setup and contact their internet service provider if they continue to experience slow speeds. **