Where can electromagnetic waves travel that mechanical waves do not

Electromagnetic waves differ from mechanical waves in that they do not  require a medium to propagate . this means that electromagnetic waves can travel not only through air and solid materials bit also through vacuum of space.

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.