  We calculate exotic cooling rates of stars due to photo-production of light
particles (mostly scalars and pseudoscalars) which originate from the hidden
sector of no scale supergravity theories. Using this we can restrict the
gravitino mass $m_{3/2}$. The range of eliminated values of $m_{3/2}$ stretches
over six orders of magnitude and is given by $\displaystyle{2 \times 10^8 <
{m_{\tilde g} \over m_{3/2}} < 6 \times 10^{13}}$, $m_{\tilde g}$ being the
gluino mass. Combining our result with the earlier analysis from colliders
($\displaystyle{ {m_{\tilde g} \over m_{3/2}} < 2.7 \times 10^{14}}$) we
conclude that $\displaystyle{{m_{\tilde g} \over m_{3/2}} < {\cal O}(10^8)}$
except for a narrow window around $10^{14}$. Together with the current
experimental limit on $m_{\tilde{g}}$ and cosmological constraints on
$m_{3/2}$, albeit model dependent, our analysis shows that a light gravitino is
on the verge of being ruled out.
