Sun-Earth connection

NASA Features Research by HAO Scientist Xuguang Cai

Satellite with spectrograph instrumentation hovering over the earth

Since 2017, HAO has provided scientific support and analysis for NASA's Global-scale Observations of the Limb and Disk (GOLD).

Geospace response to an extreme solar flare

Solar flare effects on magnetospheric convection and ionospheric potential.
Friday, June 18, 2021

Solar flares—a sudden eruption of electromagnetic radiation at the Sun—are known to have significant impacts on Earth’s upper atmosphere and ionosphere, but their collective effects on geospace as an integrated system have never been examined.

The Sun, The Earth, and Near-Earth Space

John A. Eddy's book cover illustration showing partial section of earth's globe

While solar radiation enables and sustains life on Earth, it also produces “space weather” that can profoundly impact different technologies, including telecommunications, satellite navigation, and the electric power grid.

Introducing a Book— The Sun: A Very Short Introduction

Photographic image of the book cover to "The Sun: A Very Short Introduction" by Phil Judge

Philip Judge is a senior researcher in physics at the High Altitude Observatory. Education and outreach has been a major focus and passion during his scientific career. He has influenced and encouraged many young scientists to pursue careers in solar physics.

Space Weather: Big and Small, A Continuous Risk

Artistic rendering of the Sun and its atmosphere consist
Friday, May 10, 2019

"Space Weather" is the term used to describe the relentless barrage of particles that bathe the Earth and other planetary bodies of the solar system that originate in the steady evolution, and catastrophic breakdown, of magnetic structures on the Sun.

High cadence visible and infrared spectra of the Sun during eclipse

Graph of raw counts are plotted against wavelength in air for spectral lines
Friday, February 1, 2019

We study visible and infrared spectra, from 310 nm to 5 microns, obtained during the 21st August 2017 eclipse. The instruments were situated at Camp Wyoba (altitude 2402 m) on Casper Mountain, WY.

Delores Knipp

Delores Knipp is a Senior Research Associate at the High Altitude Observatory of the National Center for Atmospheric Research.

Rosetta Stone Eclipse Campaign

(Right to left) FLIR camera, PolarCam, and Avantes flash spectra

HAO scientists observed the August 21st total eclipse with a suite of three instruments with financial assistance provided by NASA.

HAO Participates in Another Super Science Saturday

Learning about Magnetism

On November 5, 2016 UCAR/NCAR held its annual Super Science Saturday event at the Mesa Lab in Boulder.

May 1967 Great Storm and Radio Disruption Event

The flare image in Hydrogen-alpha emission (Image courtesy of NSO).
Friday, August 5, 2016

Although listed as one of the most significant events of the last 80 years, the space weather storm of late May 1967 has been of mostly fading academic interest.

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