Thursday, January 2, 2025
Planets on Full Display in Winter Night Sky
Tuesday, April 9, 2024
About Monday's Solar Eclipse
Thursday, May 19, 2022
Constellation of the Month: Virgo (the Maiden)
Saturday, May 14, 2022
Full Lunar Eclipse for Sunday Night/Monday Morning
Melissa brought to my attention that this Sunday night we're having a full lunar eclipse, dubbed "Blood Moon" by apparently melodramatic folks, that should be visible in Gainesville, barring overcast skies or fog. It is set to begin at 9:32 pm with the penumbral eclipse, progressing to partial eclipse starting at 10:27 and then on to the full eclipse starting at 11:29. The eclipse reaches its maximum point at 12:11 am Monday morning. Then the eclipse reverses, the full eclipse ending at 12:53, the partial at 1:55, and the penumbral at 2:50. A lunar eclipse is different from a solar in that in the latter the effect is caused by the moon blocking the sun while in the former the moon is on the opposite side of Earth from the sun, entering our planet's shadow (or penumbra) to cause the eclipse. This particular eclipse should be visible for most of North America and South America, but not for the rest of the world. I'm looking forward to watching it...
Thursday, May 6, 2021
Constellation of the Month: Corvus (the Crow)
Monday, April 19, 2021
Constellation of the Month: Ursa Major
Thursday, March 25, 2021
Constellation of the Month: Hydra (the Sea Serpent)
Thursday, February 18, 2021
Constellation of the Month: Gemini (the Twins)
Saturday, January 16, 2021
Constellation of the Month: Orion (the Hunter)
Thursday, January 7, 2021
New Celestron Telescope
Melissa gave me a very interesting Christmas present this year: a Celestron Powerseeker 127EQ reflector telescope that promises to open up the nighttime sky in much enhanced detail for me. I haven't yet assembled it, though. I'd like to get more backyard privacy first in order to use it without the neighbors freaking out. Putting it together shouldn't be that difficult, especially with a number of YouTube "how to" videos to assist. January, usually marked by dry, cool weather and clear skies here in northern Florida, is the best month for star-gazing with Orion, the most spectacular constellation of all, high in the southern sky...but regardless of the time or season there should always be something interesting to see. I greatly look forward to viewing the moon and planets in greater detail as well as nebulae, star clusters and galaxies. Stay tuned...
Sunday, December 20, 2020
The Great Conjunction of Planets Jupiter and Saturn Tomorrow Evening
Tomorrow evening...assuming there are clear skies above us...we should be treated to a rare astronomical event as the planets Jupiter and Saturn will appear the closest to each other they ever have from Earth's perspective in nearly 400 years. This doesn't have anything to do with the two planets' distances from each other, though, and we're fortunate that both have moved eastward on their respective zodiacal paths so that when Monday's conjunction occurs they should be visible just above the southwestern horizon when the sun sets and the sky darkens. Last night here in Gainesville the skies were overcast and the same is predicted tonight...tomorrow, though, they will be clear: alas, I'll be at work then. Still, for the past few months I've enjoyed looking at the two largest planets in our solar system close together in the sky, in the constellation Sagittarius (just west of Capricornus, where they are now to be found). Once you've seen them "hug" each other tomorrow evening in their celestial dance, then swing over to the high eastern sky and behold Mars, still much brighter than it is usually seen. And, of course, the moon is right there in the middle of it all...
Saturday, December 12, 2020
Constellation of the Month: Perseus
For December I picked as my Constellation of the Month Perseus, prominent for much of the year in northern nighttime skies, and which crosses the meridian around 9 pm this month. It represents the Greek mythological hero who, riding the winged horse Pegasus, rescues the fair maiden Andromeda from the sea monster Cetus at Queen Cassiopeia's behest...all are represented by nearby constellations. The 1981 movie Clash of the Titans, starring Harry Hamlin as Perseus, presented one version of the story. Perseus, although possessing no first magnitude stars, is nevertheless loaded with many bright ones, marked by Mirfak and Algol...the latter, "only" 93 light years away from us, is actually a triple star, with its variation in brightness caused by the stars taking turns eclipsing one another. Mirfak is much further away and bigger. Perseus is the focus of the annual Perseids, the most spectacular meteor shower of all and which takes place in the wee morning hours around August 11-13 as the Earth rotates into a cloud of dust particles along its orbit around the sun and ignites them within the atmosphere. I can't begin to count the times, though, in which I tried to watch it but for various reasons was thwarted...often from overcast skies, my schedule, or just falling asleep: let's see if I can't catch it in 2021! I've always welcomed seeing Perseus rising up in the northeastern sky (from my Florida latitude) as it presages the coming of the most interesting part of the celestial sky, that of the wintertime. Next month there can be only one constellation that stands out above all others for January...well, even for the entire year, for that matter: can you guess which one it is?
Thursday, December 10, 2020
Local Weather Finally Cools Down
The weather here in northern Florida in the last week or two has finally turned, it seems, toward more wintery, cool conditions...I'm not sure whether to say "thank you" or "oh, no". Especially in the morning it's the latter choice as I simply do not like the general chill of the area and can't wait to get some hot coffee within me at the first opportunity. Once the day is firmly underway, though, I tend to enjoy the coolness and dryness. And with the nighttime, the stars are so much brighter...and then the cycle renews itself the next morning. When the last cold front passed through, storms hitting my area during the dead of night, my front yard became covered with autumn leaves...guess I'll have to get the rake out before long (let's see if a few more don't come down first). I'm also happy to see the end of this horrendous 2020 hurricane season...although Louisiana and other areas were hit hard, my own Gainesville vicinity was largely spared although Tropical Storm Eta did sweep through us a few weeks ago, again during the dead of night, knocking down a few branches. With this colder weather the mosquito presence should subside as well...my workplace is basically situated on the edge of Paynes Prairie, a large wetlands area just south of Gainesville and as big as the city, serving as a vast mosquito incubation zone. Now excuse me while I go get that crucial first cup of coffee...
Tuesday, November 17, 2020
Constellation of the Month: Cassiopeia (the Queen)
Last month I was standing out in our backyard with Melissa one clear evening, pointing out the visible planets and some stars with their constellations. She looked around and pointed to a close group of moderately bright stars in the northern sky, roughly shaped like an "M". I answered that it was Cassiopeia, representing the queen and mother of Andromeda in the Greek mythical tale of Perseus...several constellations from this story dominate the autumn evening sky. I picked Cassiopeia as my constellation of the month for November for that reason: its easy visibility, at least from northern hemisphere skies. It's not that large as constellations go, but it represents the northern seasonal counterpart to Ursa Major's asterism the Big Dipper, which dominates in the springtime. As a kid, I always learned to draw it as a sort of upside-down chair or throne including one of the fainter stars...my above pictured drawing reflects this. Star maps usually "connect the dots" with it looking like a "W"...or "M" when it reaches its peak above Polaris, the North Star. As you can see, the five M or W stars of the constellation are designated by the first five letters of the Greek alphabet, something that Atlantic tropical storm followers are probably well acquainted with after this record-setting hurricane season of 2020. The additional star I connected is Kappa, and just a few degrees from it is located the remnants of one of the greatest observed supernova explosions in recorded history. Officially known as SN 1572 for its year of occurrence, or Tycho Brahe's supernova after the famous astronomer of that time, it was around 8-9,000 light years distant but its peak brilliance reached a magnitude of -4, making it as bright as Venus back then, 448 years ago...the remnant is now only detectable through strong optical, x-ray and radio telescopes. There are a couple of other constellations I could have picked out for November...let's see how long I can string out this monthly blog feature: I'd like to eventually cover all 88 of them...
Saturday, November 14, 2020
Four Astronauts Slated for Space Launch from Cape Canaveral Sunday Evening
Thursday, October 15, 2020
Constellation of the Month: Pegasus (the Winged Horse)
Thursday, September 17, 2020
Constellation of the Month: Cygnus (the Swan)
Saturday, August 15, 2020
Constellation of the Month: Sagittarius (the Archer)
Sagittarius, representing an archer (one of two constellations depicting half-horse, half-man centaurs), is prominent in the southern sky during the month of August in the evening. Although there are no first magnitude stars in it, there are plenty of second and third magnitude...but its main feature is that the Milky Way runs strong through it and there are many Messier objects...mainly nebula and star clusters...interspersed throughout. I picked it as my constellation of the month over a couple of others because of the striking presence of the planets Jupiter and Saturn in its northeastern corner right now. By the way, three of the names of Sagittarius's more prominent stars, Kaus Borealis, Kaus Media and Kaus Australis, are derived from two different languages...Arabic and Latin: "kaus" is "bow" and "borealis", "media" and "australis" translate to northern, middle and southern, respectively. Sagittarius is the last of the brighter zodiac constellations that march across the sky...at least for a few months: its followers...Capricornus, Aquarius, and Pisces...are pretty faint as the autumn evening sky has few bright stars of note. The above picture I drew just shows the brighter stars along with Jupiter, Saturn and the positions of some of the Messier objects...Sagittarius contains many more stars visible to the naked eye and encompasses a much wider area in the celestial sky than what I've shown...
Tuesday, July 21, 2020
Managed to See Comet NEOWISE Sunday Evening
Tuesday, July 14, 2020
Constellation of the Month: Scorpius (the Scorpion)
If you happen to be a follower of that nonscientific field of soothsaying known as astrology, you already know that Scorpio is a sign of the Zodiac, representing people born October 23-November 21...guess what, I think horoscopes are a lot of hooey. Astronomically speaking, I learned about the celestial Zodiac constellation Scorpius early in life at the age of seven...I remember that late spring night 56 years ago when I got permission to stay up late enough to watch it rise in the southeastern sky, leading with the scorpion's claws (three stars) followed by its highlight, the bright red giant star Antares. In the United States Scorpius passes low in the southern sky during summer evenings and actually does resemble a scorpion when you connect together the dots (its stars, that is). It also lies on the elliptic, meaning that our sun, moon, and the planets are seen from our vantage point on Earth to travel through it (and the other 11 Zodiac constellations). Now to call Scorpius a "July" constellation only means that round 9-10 pm in the evening of that month it crosses the meridian (the imaginary line in the sky that divides east from west). I could technically call just about any of the 88 official constellations as belonging to July since they all likewise cross that meridian line, most of them at other times of the day or night, however. So for convention's sake I do as others do and take a mental snapshot of the sky at mid-evening during a particular month...
Although Scorpius is traditionally represented by that scorpion pattern from its brightest visible stars, the constellation is actually a sector of space projected outward from Earth to the farthest regions of the universe, comprising untold numbers of galaxies. There are four Messier "objects" with Scorpius, all star clusters. Scorpius lies the furthest south of all the Zodiac constellations, passing low in continental American skies. It's usually a lot easier to notice the three prominent "claw" stars at the constellation's western end, followed by spectacular Antares. The upper two claw stars are Graffius and Dschubba, respectively. Other notable stars in Scorpius are Sargas in its tail and Shaula at the tip where the "stinger" is...
I have a memory from childhood of being with my family at the Golden Glades Drive-In theatre in northern Dade County, between Opa-Locka and Carol City near the Palmetto Expressway. We were walking outside and I happened to look up toward the south and saw Scorpius in its completeness...it's one of the more spectacular constellations in the sky, definitely the highlight of the summer season...












