• arclein
We need to make bigger solar sails from materials that can take high temperatures. Taking high temperatures means the solar sails could fly closer to the sun. If we got four times closer to the sun than Mercury (9 million miles or so )then we could go 20AU per year which is about 3 times faster than any spacecraft we have made. If we could go to about 2 million miles from then we could go to 50-60AU per year speeds.
NASA is testing solar sail with boom structures that could make solar sails about 20 times bigger. This means demonstration of the technologies needed to fabricate, fly, navigate and control 100 ?" 200 kg class missions using sails in the 1,500 to 7,000-m2 class. These are being developed and ground tested. A proposed Solar Cruiser mission was canceled in 2022.
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