UN's International Day of Persons with Disabilities is observed every year on

Bhasan Char is an island under the administrative control of

Pan-STARRS1 telescope detected an unknown object which followed a curved path in the sky, indicating its proximity to the Earth. The telescope is operated by

Which among the following international institutions adopted the Declaration and Programme of Action on a Culture of Peace?

Arecibo telescope, the second-largest single-dish radio telescope in the world, was located in