As the perseverance rover heads to mars to look for signs of ancient life a new study suggests the red planet could have been covered in ice sheets and not a valley of rivers as previously.
Roofed in ice.
Ancient valleys show planet may have been covered in ice.
Glacials are colder phases within an ice age in which glaciers advance.
Glaciers may have covered mars southern highlands over 3 5 billion years ago.
Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen.
Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage.
3 2020 8 30 a m.
Glacials are separated by interglacials.