Sunday, February 28, 2021

Upgrading The Energy Grid; Stopping The Next Extremist Attack; Songs Of Remembrance

Plus, why young professionals are struggling to maintain friendships during the pandemic.

APOD - The Aurora Tree

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2021 February 28
See Explanation.  Clicking on the picture will download  the highest resolution version available.

The Aurora Tree
Image Credit & Copyright: Alyn Wallace

Explanation: Yes, but can your tree do this? Pictured is a visual coincidence between the dark branches of a nearby tree and bright glow of a distant aurora. The beauty of the aurora -- combined with how it seemed to mimic a tree right nearby -- mesmerized the photographer to such a degree that he momentarily forgot to take pictures. When viewed at the right angle, it seemed that this tree had aurora for leaves. Fortunately, before the aurora morphed into a different overall shape, he came to his senses and capture the awe-inspiring momentary coincidence. Typically triggered by solar explosions, aurora are caused by high energy electrons impacting the Earth's atmosphere around 150 kilometers up. The unusual Earth-sky collaboration was witnessed in March of 2017 in Iceland.

Almost Hyperspace: Random APOD Generator
Tomorrow's picture: interstellar fowl


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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
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A service of: ASD at NASA / GSFC
& Michigan Tech. U.


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You Need More Pleasure

Help With Finding The Vaccine Where You Live

Saturday, February 27, 2021

FDA Authorizes Johnson & Johnson's One-Shot COVID-19 Vaccine

The Food and Drug Administration gave Johnson & Johnson's vaccine the green light for emergency use Saturday, a day after a panel of advisers to the agency endorsed it in a unanimous vote.

The Food and Drug Administration gave Johnson & Johnson's vaccine the green light for emergency use Saturday, a day after a panel of advisers to the agency endorsed it in a unanimous vote.

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APOD - Perseverance Landing Site from Mars Reconnaissance Orbiter

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2021 February 27
See Explanation.  Clicking on the picture will download  the highest resolution version available.

Perseverance Landing Site from Mars Reconnaissance Orbiter
Image Credit: NASA/JPL-Caltech/MSSS

Explanation: Seen from orbit a day after a dramatic arrival on the martian surface, the Perseverance landing site is identified in this high-resolution view from the Mars Reconnaissance Orbiter. The orbiter's camera image also reveals the location of the Mars 2020 mission descent stage, heat shield, and parachute and back shell that delivered Perseverance to the surface of Mars. Each annotated inset box spans 200 meters (650 feet) across the floor of Jezero Crater. Perseverance is located at the center of the pattern created by rocket exhaust as the descent stage hovered and lowered the rover to the surface. Following the sky crane maneuver, the descent stage itself flew away to crash at a safe distance from the rover, its final resting place indicated by a dark V-shaped debris pattern. Falling to the surface nearby after their separation in the landing sequence, heat shield, parachute and back shell locations are marked in the high-resolution image from Mars orbit.

Tomorrow's picture: northern lights


< | Archive | Submissions | Index | Search | Calendar | RSS | Education | About APOD | Discuss | >

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.


This is an automated email. If you notice any problems, just send me a note at gtracy@gmail.com. You can add and remove email addresses to this distribution list here, https://apodemail.org.Unsubscribe

‘Liner Notes For The Revolution’: An Interview With Daphne A. Brooks

Plus, check out all our Black History Month Tiny Desk concerts.