The ancient record 'Tian-da-yi' (the sky darkened greatly) is identified with the solar eclipse on May 31, 976BC. This identification is demonstrated in
Magnetic fields are observed everywhere in the universe.In this review,we concentrate on the observational aspects of the magnetic fields of Galactic and extrag
Gamma-ray bursts (GRBs) are the most intense transient gamma-ray events in the sky; this, together with the strong evidence (the isotropic and in homogeneous di
1RXS J232953.9+062814 was identified as a cataclysmic variable by Wei et al. (1999). Four low-resolution spectra of 1RXS J232953.9+062814 were obtained with the
IRAS 01005+7910 is a cold IRAS source. We present its optical identification, photometric and spectroscopic observation results. Its optical counterpart is clas
We present a snapshot of our recent results of a variable star survey in1 degree fields around three open clusters: NGC 188, NGC 7789 and M67. A totalnumber of