X rays from astronomical objects can only be detected from telescopes in space.

The statement is accurate. X-rays are a form of electromagnetic radiation, and their wavelengths are much shorter than those of visible light. When X-rays reach the Earth's atmosphere, they interact with air molecules and are absorbed, making ground-based telescopes incapable of detecting them effectively.

To observe X-rays from astronomical objects, telescopes must be placed in space above the atmosphere. This allows for direct observation of X-ray emissions from objects such as neutron stars, black holes, and supernova remnants. Instruments like the Chandra X-ray Observatory and the XMM-Newton satellite are specifically designed to collect and analyze X-ray data, providing valuable insights into high-energy astrophysical processes that are not observable from the Earth's surface. This capability has significantly advanced our understanding of the universe and its energetic phenomena.