This telescope was carried into space in 1990 by the space shuttle. it is still operating today and it produces the most detailed visible-light images ever made of very distant objects in our universe. this is the

Hydrogen and helium are both members of?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Ionic compounds can be readily dissolved in water because the high dielectric constant of water screens and decreases the force between the oppositely charged ions.