[填空题]
Estimate the angular width t57vh xqwc +*shhat our Galaxy would sa- (v6 ;ufob9adox112khdj qfubtend if observed from the nearest galaxy to us (Table 33-1). Compare to the angular widtqd1hbajv; du o6 92o1a-xf k(fh of the Moon from Earth. $\phi $ = $ \times 10^{-2} rad$