A butterfly’s life cycle provides an excellent way to teach students about the stages of development found in all living things and introduce scientific vocabulary. Female butterflies lay their eggs on leaves. Within days, these eggs hatch into caterpillars that consume leaves while eating more and growing larger as their skin sheds many times before […]
The Life Cycle of a Butterfly Read More »
Apollo command module power was supplied primarily by fuel cells that used hydrogen and oxygen as feedstock to produce electricity, producing drinking water that astronauts consumed as drinking supplies. NASA developed this technology as batteries would add too much weight, and the group that created these cells, now known as HyAxiom Inc, still produces them
The Apollo Mission Fuel Cell Assembly Read More »
As you explore our Solar System, it is essential to determine which planets are the closest to Earth in terms of atmospheric proximity and why their atmospheres vary so drastically from each other. Venus, considered Earth’s “sister planet,” can often be confused for being too hot; this is because of its thick carbon dioxide atmosphere
The Planets Closest to Earth’s Atmosphere Read More »
Plants grow to reproduce. To do this, they develop flowers which can be pollinated by insects; these then turn into seeds which continue the lifecycle and the process repeats itself. Seeds are dispersed through wind, water or animals to places where they can germinate. Once this occurs, their embryo begins growing roots and stems while
The Life Cycle of a Plant Read More »
On a sunny day, the sky appears blue because solar wavelengths are scattered most by particles in our atmosphere – an effect known as Rayleigh Scattering. Air molecules are smaller than the wavelengths of light, so they scatter it evenly in all directions – more so at shorter wavelengths such as blue than longer ones
Why is the Sky Blue? Read More »
The sky is blue due to light rays passing through Earth’s atmosphere and being scattered by air molecules; light at the blue end of the spectrum tends to be dispersed more strongly than other colors. Air molecules are smaller than visible light wavelengths, so they scatter shorter wavelengths such as violet more readily than longer
Why is the Sky Blue? Read More »
The sky is blue due to small molecules in the atmosphere scattering shorter wavelengths more effectively, known as Rayleigh scattering. As sunlight hits clouds, its light is scattered by larger water droplets or ice crystals which scatter all colors equally so white light remains visible. Light tends to travel upwards or to the sides, creating
Why is the Sky Blue and Clouds Are White? Read More »
Plants undergo a life cycle which includes stages such as germination, growth, flowering and seed formation. In this article we will focus on the flowering lifecycle. Once a seed reaches optimal conditions of moisture, warmth, and light, it sprouts into a seedling with roots growing down to anchor it into the earth, while stems extending
The Life Cycle of a Flowering Plant Read More »
As ships sail the seas or rockets launch into space, each mission’s name holds a special allure – but who decides what these powerful machines should be called? Answering that question involves equal parts history, tradition and mythological symbolism. NASA has had a protocol in place since the early 1960s for naming missions and spacecrafts.
The Magic of Spacecraft Names Read More »
