I. What is CMB Polarization? The Cosmic Microwave Background (CMB) is the afterglow of the Big Bang, a faint radiation that permeates the entire universe. CMB polarization refers to the alignment of the electric and magnetic fields of the CMB photons, which can provide valuable insights into the early universe and the processes that shaped … Read more
What is Bigelow Aerospace? Bigelow Aerospace is a private aerospace company founded by Robert Bigelow in 1999. The company specializes in developing expandable space habitats and inflatable modules for use in space exploration and commercial space travel. Bigelow Aerospace has made significant contributions to the field of space technology and has played a key role … Read more
I. What are Photon-dominated Regions (PDRs)? Photon-dominated regions (PDRs) are regions in space where the dominant source of energy is ultraviolet (UV) radiation from nearby stars. These regions are typically found in interstellar clouds where young, massive stars are forming. The UV radiation from these stars ionizes and heats the surrounding gas and dust, creating … Read more
I. What is Orbital Decay? Orbital decay is a phenomenon that occurs when a satellite or spacecraft in orbit around a celestial body, such as the Earth, gradually loses altitude and eventually re-enters the atmosphere. This can be caused by a variety of factors, including atmospheric drag, gravitational forces, and other external influences. Orbital decay … Read more
I. What is Galactic Cannibalism? Galactic cannibalism, also known as galactic mergers or galaxy interactions, is a phenomenon in which one galaxy consumes or merges with another galaxy. This process is a common occurrence in the universe and plays a significant role in shaping the evolution of galaxies. The term “cannibalism” is used to describe … Read more
Explore how space probes transmit images, science measurements, and telemetry across millions of miles using antennas, radio waves, and NASA’s Deep Space Network.
I. What are Molecular Outflows? Molecular outflows are powerful jets of gas and dust that are ejected from young stars and protostars at high velocities. These outflows play a crucial role in the process of star formation and are an important component of the interstellar medium. They are composed of molecular gas, such as carbon … Read more
Learn what commercial space exploration means, how private companies operate in space, and why this fast-growing industry matters.
Learn clear, age-appropriate ways to explain astronomy to kids using stories, visuals, and hands-on activities that make space feel exciting and understandable.
Discover the thermal, power, radiation, and life-support systems that let spacecraft operate in the harsh environment of space.