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Sky Digest

Saturday, 28 February 2026 | Default Location
Showing the sky from Greenwich, London. Log in to use your own location.
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Tonight at a Glance

Waxing Gibbous 92%
Dark window: 18:45 – 05:14 (10 h 28 m)

Bright moon tonight — deep-sky viewing will be limited

Aurora Forecast — Very unlikely

Kp 4.7 / need 7 Bz 1.6 nT

Geomagnetic activity far below the Kp 7 needed at your latitude.

View full forecast

Planet Highlights

Jupiter mag -2.5 · 61° alt · Gemini Details
GRS transit tonight:
Europa Shadow transit ends
Io Shadow transit begins
Io Transit begins
Io Shadow transit ends
+4 more — Details

Comets

MAPS mag 8.7 · 1° alt · Cetus Details
bright 1.57 AU Perihelion: Apr 4 (in 12d)

For Beginners (naked eye)

M44
Beehive Cluster or Praesepe Open Cluster
mag 3.7

At 21:00 look high in the southeast

Cancer
M42
Great Orion Nebula Nebula
mag 4.0

At 21:00 look halfway up in the southwest

Orion
NGC 2232
Open Cluster
mag 3.9

At 21:00 look halfway up in the south

Mon

Binocular Targets

U Ori
Variable Star
mag 5.4

At 21:00 look high in the southwest

Ori
M47
NGC 2422 Open Cluster
mag 4.4

At 21:00 look low in the south

Puppis
M31
Andromeda Galaxy Galaxy
mag 3.4

At 21:00 look low in the northwest

Andromeda

Small Scopes (3–6 inch)

Castor
HIP 36850; Alpha Gem; 66 Gem Double Star
mag 2.0

At 21:00 look near the zenith

Gem
C58
NGC 2360 Open Cluster
mag 7.2

At 21:00 look low in the south

Canis Major
Blue Snowball
NGC 7662 Planetary Nebula
mag 9.0

At 21:00 look low in the northwest

And
M81
Bode's Galaxy Galaxy
mag 6.9

At 21:00 look high in the northeast

Ursa Major
HIP 35210
Double Star
mag 4.8

At 21:00 look low in the south

CMa

Big Scopes (8–12 inch)

Z Cam
Variable Star
mag 10.0

At 21:00 look high in the north

Cam
NGC 2304
Open Cluster
mag 10.0

At 21:00 look high in the south

Gem
Eskimo Nebula
NGC 2392 Planetary Nebula
mag 9.2

At 21:00 look high in the south

Gemini
C7
NGC 2403 Galaxy
mag 8.4

At 21:00 look near the zenith

Camelopardalis
T Tau
Variable Star
mag 9.3

At 21:00 look halfway up in the west

Tau

The Week Ahead

Sat Sun Mon Tue Wed Thu Fri
🌔 92% 🌔 97% 🌕 100% 🌕 100% 🌕 98% 🌖 94% 🌖 89%
Full Moon Ursa Major Best Placed

NASA Astronomy Picture of the Day

Lunar Occultation of Mercury

Fans of the western sky after sunset have lately enjoyed this month's remarkable array of bright planets. Witnessed from some locations, on February 18 planet Mercury even appeared to slide behind the Moon, an event known as a lunar occultation. These two snapshots, taken in early evening skies show before and after telescopic views of the rare disappearance of innermost planet behind young Moon. The top panel finds bright Mercury just visible at the northern (right) edge of the earthshine-illuminated lunar disk. In the bottom panel the bright planet has emerged in darker skies beyond the Moon's sunlit crescent. As seen south of Sallisaw, Oklahoma, planet Earth, this lunar occultation of Mercury lasted only about 3 minutes (video). But you can still check out a parade of planets tonight. March 3: Total Lunar Eclipse

Image credit: Fabrizio Melandri — APOD is a service of NASA and Michigan Tech. U.

View on NASA APOD

Space News

NASA’s X-59 Experimental Supersonic Aircraft Makes Second Flight

NASA's X-59 experimental supersonic aircraft completed its second flight, initiating a series of dozens of test flights planned for 2026 to advance quiet supersonic flight technology.

NASA — 20 Mar 2026

Artemis II rolls again

Artemis II rocket completed its second rollout to the launchpad at Kennedy Space Center, marking a major milestone in preparations for NASA's crewed lunar mission.

ESA — 20 Mar 2026

NASA Simulations Improve Artemis II Launch Environment

NASA used advanced simulations to optimize launch conditions for Artemis II, studying how airflow around rockets impacts the test flight around the Moon.

NASA — 20 Mar 2026

How Open NASA Data on Comet 3I/ATLAS Will Power Tomorrow’s Discoveries

More than a dozen NASA science missions observed the rare interstellar comet 3I/ATLAS before it leaves our solar system, with observations being archived in NASA's public data for future research.

NASA — 20 Mar 2026

Smiles and Spacesuits

NASA astronaut Chris Williams conducted a spacesuit fit verification aboard the International Space Station, ensuring proper functionality and comfort for future spacewalks.

NASA — 20 Mar 2026

Kepler's Laws Come Alive

Drag velocity vectors to reshape orbits, watch equal areas sweep in equal times, and discover why distant planets orbit slower — all three laws animated in real time.

Kepler's Laws Come Alive Open Kepler's Laws

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