Tuesday, April 29, 2025

SEE THE YOUNG WAXING CRESCENT MOON AND JUPITER TONIGHT - 4/29/25

 Hey, Space Placers!

A thin crescent shape is above a line representing the horizon. A large dot, Jupiter, is upper left of the crescent. On the next evening, the crescent is higher and nears the large dot.

Tonight as it gets dark take a look to the West. Find bright Jupiter, you can't miss it. 

To the lower right of Jupiter, try spotting the 2.5 day old crescent moon. 

It will help to have a clear view of the horizon and binoculars.

Get all the details here in the video.

Get those smartphones and cameras out to take a pic and image that lovely earthshine!

Sky Guy in VA


Monday, April 28, 2025

Sunday, April 27, 2025

How do you build meteorite-resistant habitats on the Moon?

 Hey, Space Placers!

Underground regolith model part 2

    Design of a moon settlement. 

    Credit: Monika Stankiewicz

Humanity is going back to the Moon to stay this time. We will need technologies that allow us to live off the land on the Moon - and shelters. These shelters need to provide protection from temperature extremes, solar and cosmic radiation - and meteorites.

There is no atmosphere to burn up and coming impactors on the Moon and there are untold numbers of impacts every day. Even the smallest lunar impact meteorite carries at least the energy of a large caliber rifle bullet which can damage concrete.

This intriguing article explains how humans might overcome this problem.

Sky Guy in VA

Friday, April 25, 2025

SEE THE "MORNING STAR" - VENUS - AT GREATEST BRILLIANCE THIS WEEKEND

 Hey, Space Placers!

In the pre-dawn sky along the eastern horizon you can't miss seeing Venus. It will be at greatest brilliancy for the entire year this weekend and a beautiful sight to see.

Binoculars will really enhance the view and in a telescope the cloud covered planet will be quite a view.

Take a smartphone/camera pic to capture the Morning Star in all her glory.

Sky Guy in VA

Wednesday, April 23, 2025

APRIL 25 SMILEY FACE IN THE SKY?????? WORTH A LOOK

 Hey, Space Placers!

Sorry for the lapse - was on vacay with family....but we are back!

As usual the 'Net is rife with "Smiley Face in the Sky April 25th".......which won't look like the portrayals posted.

Predawn April 24 and 25 — A Highlight of the Month: Venus, Saturn and the Moon pair up:

Low on the eastern horizon, brilliant Venus will be above Saturn and the waning Crescent Moon will be to their right on April 24 and will form a triangle with them on April 25. Mercury will be below and to the left of this celestial gathering. Binoculars will help to find Mercury and enhance your view these mornings. Try taking a smartphone/camera pic.

Sky GuyBack in VA

Friday, April 18, 2025

WATCH THE LYRID METEOR SHOWER WHICH PEAKS APRIL 21-22

 Hey, Space Placers!

We had a chance to see the Northern Lights (Aurora) earlier this week   https://wtop.com/local/2025/04/northern-lights-may-be-visible-wednesday-from-the-dc-area-heres-how-to-see-them/.   What you may not have known is that the April 16th Geomagnetic Storm that was causing the Aurora was also sending electrical currents into the ground https://spaceweather.com/archive.php?view=1&day=18&month=04&year=2025 which were very high near the DMV!  

Now we can gear up for another sky show - the Lyrids Meteor Shower https://earthsky.org/astronomy-essentials/everything-you-need-to-know-lyrid-meteor-shower/  which is ongoing until April 29th but peaks on the night of April 21-22. From a dark sky site with no moon one can expect about a dozen Lyrids per hour. The shower has been known to produce an “outburst” of a 100 Lyrids an hour.

Each year at this time our planet encounters a debris stream of cometary dust made by Comet Thatcher. As Earth moves in its orbit around the Sun it collides with this debris stream and the cometary debris particles hit our atmosphere to become “shooting or falling stars”.

 Traveling at 29 miles per second (110,000 miles per hour) these cometary bits hit the atmosphere 80 miles up and heat the atmosphere white hot which is what we see. Usually the size of a grain of sand they can also be as big as a marble. Speed plus size makes for a lot of “oohhs and aahhhs”.

   You do not need any equipment or know how to enjoy the show - just find a place where you can put a lounge chair or blanket to see the sky. Starting at 10 p.m. in the northeast the constellation for which this meteor shower is named - Lyra - hangs low above the horizon and will rise higher as the night progresses. A meteor that is part of the shower can be traced back to Lyra. Sporadic meteors that are not part of the shower can be seen during the night as well.

 The shower should improve after midnight and Lyrids can appear anywhere in the sky but looking straight up gives you the widest viewing area - this is where the lounge chair or blanket come in handy. The moon will interfere a bit with viewing the shower just before dawn.

 If you are a city dweller you still may see the brightest Lyrids as long as you are not staring into a street light or nestled in amongst tall buildings. The view of the Lyrids is worth it from the suburbs as long as lights and obstructions are minimized as best you can.

 Enjoy the shower with family, friends or your significant other. Some food and beverages are an added plus. Be sure to have extra clothing as it can get cool at night. 

Weather is predicted to be cloudy https://wtop.com/weather/  during the peak so we will just have to see. 

If the cloud gods allow, and you are up before dawn, that brilliant orb in the East is Venus! There is much still happening in the sky as we wind down April so check it out https://wtop.com/the-space-place/2025/04/whats-up-in-the-sky-for-april-2025-venus-lyrids-meteor-shower-and-more/ 

Sky Guy in CA