Because the star is much smaller than the Sun , the mass loss per unit surface area from Proxima Centauri may be eight times that from the solar surface .
SCONJ DET NOUN VERB ADV ADJ SCONJ DET PROPN , DET ADJ NOUN ADP NOUN NOUN NOUN ADP PROPN PROPN AUX VERB NUM NOUN SCONJ ADP DET ADJ NOUN .