Captured on January 28, 2020, this is the first image of a sunspot by the National Science Foundation’s Inouye Solar Telescope located near the summit of Haleakalā in Maui, Hawaiʻi. The image reveals striking details of the sunspot’s structure as seen at the Sun’s surface, and has over twice the detail previously achieved by any…
Tag: sun
Solar Orbiter’s First Images Reveal the Sun Covered With Tiny “Campfires”
The pictures are in! The first image data from the cameras aboard ESA’s Solar Orbiter were revealed today, July 16 2020, and reveal many features on our Sun we’ve never been able to see before—including small-scale flare activity dubbed “campfires.” (I say small-scale but they’re actually the size of entire countries!) “The Sun might look…
Sometimes it Rains on the Sun
(Updated post from 2013) The Sun is awesome. I mean, never mind that it contains 99% of all the mass in the Solar System, that it supplies our planet with the energy needed to sustain life, that its constantly-blowing solar wind helps keep some of those nasty cosmic particles out of the planetary neighborhood, and…
Fun Fact: All the Planets in the Solar System Could Fit Between Earth and the Moon
It might seem a bit far-fetched but yes, it’s true: if you could line up all of the other planets in our Solar System in a row edge-to-edge (or more geometrically accurately, limb-to-limb) and for good measure even include Pluto, the entire queue would easily fit within the space between Earth and the Moon. (Not…
Solar Orbiter is Now Capturing the Closest-Ever Pictures of the Sun
(News from ESA) On June 15, 2020, the ESA/NASA Solar Orbiter spacecraft made its first close approach to the Sun (perihelion), coming within 77 million kilometers (48 million miles) of its surface—about half the distance between the Sun and Earth. Over the next week mission scientists will test the spacecraft’s ten science instruments, including the six…
This is Our Most Detailed Image of the Sun’s “Surface”
The first image from the National Solar Observatory’s Daniel K. Inouye Solar Telescope shows the “surface” (i.e., the photosphere) of our Sun in the highest resolution ever obtained, revealing structures as small as 30 kilometers (18.6 miles) wide squeezed between cells of convective activity—many of them considerably larger than the state of Texas!
Bagging Baily’s Beads
This is my favorite photo I captured during the August 21 solar eclipse from Charleston, SC. It shows a phenomenon called Baily’s Beads, which is caused by the last bits of Sun peeking through low points and between mountains along the limb of the Moon in the final moments before 100% totality. They’re only visible…
Black Hole Sun: Photos of a Total Solar Eclipse
Today, August 21, 2017, the Moon briefly slid in front of the Sun, casting its shadow onto the Earth–the deepest part of which (called the umbra) passing across the United States from Salem, Oregon to Charleston, South Carolina. I arranged to be positioned at the latter location, and thus experienced for the first time solar…
Answers to 8 Questions About the August 2017 Solar Eclipse
It’s August and one of the most highly-anticipated astronomical events of the 21st century is nearly upon us: the August 21 solar eclipse, which will be visible as a total eclipse literally across the entire United States…but that doesn’t mean everywhere in the United States. Totality will pass across the U.S. in a narrow band about…
NOAA and NASA Open a New Set of Eyes on the Sun
Look out SDO—there’s another set of eyes watching the Sun in a wide swath of wavelengths! The images above are the first from the Solar Ultraviolet Imager (SUVI) instrument aboard NOAA’s new GOES-16 satellite, positioned in a geostationary orbit about 22,200 miles from Earth. These are SUVI’s first successful test images, captured on Jan. 29, 2017; once fully…
ESO Turns its ALMA Eyes on the Sun
The European Southern Observatory has begun imaging the Sun for the first time, using its Atacama Large Millimeter/submillimeter Array (ALMA)—a suite of large dish-type telescopes located on a plateau 16,000 feet above sea level in the arid Chilean Andes. ALMA’s capabilities to observe in millimeter and submillimeter wavelengths allow imaging of the Sun’s dynamic chromosphere and…
Solar Photographer Spots Mercury On Its Trip Across the Sun
On May 9, 2016, over the course of seven and a half hours beginning at 7:12 a.m. EDT (11:12 UTC) Mercury passed across the disk of the Sun, appearing to observers on Earth as a small dark dot in front of the massive brilliance of our home star. While the event wasn’t visible to the naked…
Lights in the Dark 