This Is How Incredibly Breathtaking Auroras Look From Space

The aurora from another perspective.

The aurora, known as the northern lights in the north and the southern lights in the south, is a mesmerizing phenomenon of luminous illumination in the nighttime atmosphere. It is named for the Roman deity associated with the break of dawn and manifests itself at the Earth’s northern and southern poles.

At times, the interaction between space weather and Earth can result in auroras expanding beyond the polar regions. These dynamic displays of vibrant lights exhibit an ever-changing nature, fluctuating in both form and intensity, ranging from faint and scattered to luminous enough to provide ample reading light.

The dancing lights of the aurora provide spectacular views on the ground, and equally, if not even more mesmerising, views when viewed from space. The breathtaking images below of southern and northern auroras have been taken by astronauts during their missions aboard the International Space Station (ISS).

How do auroras form? They are the result of a rather complex process. The Sun unceasingly generates a stream of charged particles known as the solar wind, which emanates outward into the vast expanse of the solar system. Upon encountering Earth’s magnetic field, the solar wind can trigger a phenomenon called magnetic reconnection. This explosive process facilitates the acceleration of charged particles from space into the Earth’s atmosphere.

The magnetosphere, Earth’s teardrop-shaped magnetic field, undergoes constant oscillations in response to the ever-changing intensity of the solar wind. As the solar wind particles flow around the magnetosphere, they gradually accumulate in its elongated tail, becoming trapped within it. During episodes of magnetic reconnection, these particles undergo acceleration towards the Earth’s poles. Along their journey, they collide with atoms and molecules in the upper atmosphere, initiating an interaction that imparts additional energy to the atoms. This surplus energy is subsequently released as a dazzling burst of light. These interactions persist at progressively lower altitudes until all the incoming energy is dissipated. When we observe the luminous aurora, we are witnessing an extraordinary spectacle comprised of billions of individual collisions that illuminate the magnetic field lines encircling the Earth.

Scientists employ various perspectives to study auroras, encompassing observations from below, above, and within. Ground-based telescopes and radar are utilized to look skyward and monitor the celestial occurrences. NASA missions like THEMIS investigate the factors behind the striking transformations of auroras, from gentle undulating waves of light to vibrant and dynamic streaks of color. To gather data from within an aurora in real-time, NASA employs sounding rockets. These rockets embark on brief space voyages lasting 5 to 20 minutes, venturing directly into the heart of auroras. Additionally, NASA actively supports the citizen science program Aurorasaurus, engaging people worldwide to contribute in tracking and observing auroras.

Through the study of auroras and their temporal variations, scientists gain valuable insights into the reactions of our planet’s magnetosphere to space weather in its vicinity.