<ul><li>Liquid mirror telescopes use a thin layer of mercury and rotation to form a parabolic surface, making them cost-effective but limited in function.</li><li>A recent study proposes using a ferrofluid and electromagnets to improve liquid mirror telescopes, allowing for some degree of orientation and shape retention.</li><li>This method could be effective for space telescopes in environments with weaker gravity, such as on the Moon.</li><li>Although the feasibility has been explored, current electric circuitry needs improvement for practical implementation.</li></ul>

Liquid Mirrors Can Only Point Straight Up. Could Magnets Solve This Problem?

Discover more