lines = 'planet x_years y_astronomical_units x_over_y
Mercury 0.241 0.387 1.002
Venus 0.615 0.723 1.001
Earth 1.000 1.000 1.000
Mars 1.881 1.524 1.000
Jupiter 11.86 5.203 0.999
Saturn 29.46 9.54 1.000
Uranus 84.01 19.18 1.000
Neptune 164.8 30.06 1.000'
con = textConnection( lines )
DF = read.table( con, header=TRUE )
close(con)