Apodsky

other stars of the Canis Majoris OB1 association spans over 200 light-years at the Seagull Nebula's estimated 3,800 light-year distance.

is Likely part of an extensive shell structure swept up by successive supernova explosions. The notable bluish arc below and right of center is a bow shock from runaway star FN Canis Majoris. Dominated by the reddish glow of atomic hydrogen, this complex of interstellar gas and dust clouds with

Sirius, alpha star of the constellation of the Big Dog (Canis Major). The bright head of the Seagull Nebula is cataloged as IC 2177, a compact, dusty emission and reflection nebula with embedded massive star HD 53367. The larger emission region, encompassing objects with other catalog designations,

An interstellar expanse of glowing gas and obscuring dust presents a bird-like visage to astronomers from planet Earth, suggesting its popular moniker, the Seagull Nebula. This broadband portrait of the cosmic bird covers a 3.5-degree wide swath across the plane of the Milky Way, in the direction of

A stunning broadband image of the Seagull Nebula (IC 2177), a sprawling complex of interstellar gas and dust, resembling a bird in flight. The image showcases the nebula's vibrant red hues from atomic hydrogen, punctuated by bluish regions and embedded stars. Located near Sirius in Canis Major, this cosmic wonder spans over 200 light-years and is part of the Canis Majoris OB1 association.

Astronomy Picture of the Day

The Seagull Nebula

Source: https://apod.nasa.gov/apod/ap250626.html

nearby star forming region. Explore the Universe: Random APOD Generator

around young variable star R Coronae Australis. Just below it, glowing arcs and loops shocked by outflows from embedded newborn stars are identified as Herbig-Haro objects. On the sky this field of view spans about one degree, corresponding to almost nine light-years at the estimated distance of the

reflection nebulas cataloged as NGC 6726, 6727, and IC 4812 produce a characteristic blue color as light from the region's bright blue stars is reflected by the cosmic dust. The dust also obscures from view stars still in the process of formation. At the left, smaller yellowish nebula NGC 6729 bends

Blue dust clouds and young, energetic stars inhabit this telescopic vista, less than 500 light-years away toward the northern boundary of Corona Australis, the Southern Crown. The dust clouds effectively block light from more distant background stars in the Milky Way. But the striking complex of

A stunning telescopic view of NGC 6726, 6727, and IC 4812 reflection nebulae in Corona Australis. Blue dust clouds illuminate the region, reflecting the light from bright blue stars. The image shows young stars forming within the nebulae, along with Herbig-Haro objects, created by outflows from newborn stars. The vastness of space is emphasized by the backdrop of distant Milky Way stars.

Astronomy Picture from 18/10/2017

Stars and Dust in Corona Australis

Source: https://apod.nasa.gov/apod/ap171018.html


#CosmicDust #Nebulae #StarBirth #SouthernCrown #NGC6726 #Astronomy #Space #MilkyWay #ReflectionNebula #AstroPhotography #DeepSpace #HerbigHaro

the image.

is the planet Mars, while the object furthest to the left is the planet Mercury. The last remaining point of light is . . . the bright star Spica, which leaves the question -- where is the fourth rocky planet? That would be Earth, specifically part of Australia, visible across the entire bottom of

Can you spot the Solar System's four rocky planets? In the above image taken on September 20, all of them were visible in a single glance, but some of them may be different than you think. Pictured above, the brightest and highest object in the sky is the planet Venus. The object lowest in the sky

Silhouette of a girl on a pier at sunset, pointing towards the sky where Venus, Mars, Mercury, and the star Spica are visible. The image cleverly highlights the four inner rocky planets of our solar system, with Earth visible as the landscape at the bottom of the frame. A stunning display of celestial alignment.

Astronomy Picture from 30/09/2008

Planets Ahoy!

Source: https://apod.nasa.gov/apod/ap080930.html


#planets #rockyplanets #Venus #Mars #Mercury #Spica #astronomy #nightsky #solareclipse #sunset #Australia

orbiting planet-sized bodies too faint to be directly visible. For a distance comparison, the orbit of Neptune is drawn at the lower right of each picture. The overwhelmingly bright starlight at the center has been blocked out to reveal the dim dust features.

gap in the dust disk of HD 141569 may be a larger scale result of unseen orbiting planets. At right is a relatively thin stellar dust ring suggestive of planetary rings held in place by orbiting moons. On a much larger scale this ring around the star HR 4796A could also indicate the presence of

These near-infrared Hubble images of dust surrounding young stars offer the latest tantalizing evidence for planets beyond our Solar System. At left, the dark gap seen in the dust disk is reminiscent of a similar large gap in Saturn's rings believed to be sculpted by orbiting moons. By analogy, the

Near-infrared Hubble images reveal dust disks around stars HD 141569 and HR 4796A. Gaps in these disks, similar to Saturn's rings, suggest the presence of unseen orbiting planets. The image includes a scale showing the diameter of Neptune's orbit for comparison. The bright starlight has been blocked to enhance visibility of the faint dust features.

Astronomy Picture from 20/01/1999

Possible Planets And Infrared Dust

Source: https://apod.nasa.gov/apod/ap990120.html


#HubbleSpaceTelescope #Exoplanets #NearInfrared #DustDisks #PlanetaryFormation #Astronomy #Space #Stars #Planets #HD141569 #HR4796A

colder than normal air in the surrounding stratosphere. The above picture of the ozone hole was taken on September 11 by TOMS on board the orbiting Earth Probe satellite.

vulnerable, though, to CFCs and halons being released into the atmosphere. International efforts to reduce the use of these damaging chemicals appear to be having a positive effect on their atmospheric abundance. The relatively large size of the ozone hole this year, however, is attributed partly to

As expected, the ozone hole near Earth's South Pole is back again this year. This year's hole, being slightly larger than North America, is larger than last year but short of the record set on 2000 September 10. Ozone is important because it shields us from damaging ultraviolet sunlight. Ozone is

Satellite image of the Antarctic ozone hole on September 11, 2003, showing a depletion of ozone over the South Pole, larger than the size of North America. The image, taken by TOMS on the Earth Probe satellite, highlights the impact of atmospheric pollutants on the ozone layer, crucial for shielding Earth from harmful UV radiation. While international efforts have decreased damaging chemicals, this year's ozone hole is larger than last year's due to colder stratospheric temperatures.

Astronomy Picture from 06/10/2003

A Near Record Ozone Hole in 2003

Source: https://apod.nasa.gov/apod/ap031006.html


#OzoneLayer #OzoneHole #ClimateChange #EarthScience #EnvironmentalScience #SpaceScience #SatelliteImage #Antarctica #UVRadiation #TOMS

nebula created by the aging bright star visible just right of center. The nebula, located in the constellation Vulpecula, is thousands of years old. Visible in this false-color photograph is glowing hydrogen gas (green) and enigmatical globules of dense molecular gas and dust (red).

Here's part of the Dumbbell Nebula that you can't see through binoculars. To see this, we suggest a sophisticated spectrograph attached to a telescope with an 8-meter aperture. Pictured above is the central part of the Dumbbell Nebula, also known as M27 and NGC 6853. The Dumbbell is a planetary

False-color image of the central region of the Dumbbell Nebula (M27, NGC 6853) in the constellation Vulpecula. Green represents glowing hydrogen gas; red shows dense molecular gas and dust. This planetary nebula was created by an aging star (visible near the center). Requires powerful telescopes to observe in this detail.

Astronomy Picture from 13/10/1998

In the Center of the Dumbbell Nebula

Source: https://apod.nasa.gov/apod/ap981013.html


#DumbbellNebula #M27 #NGC6853 #PlanetaryNebula #Space #Astronomy #Astrophysics #Cosmology #DeepSpace #FalseColor #HydrogenGas #Vulpecula #Nebulas #StarDeath

few minutes.

interesting surface features, including the large circular domes, typically 25-kilometers across, that are depicted above. Volcanism is thought to have created the domes, although the precise mechanism remains unknown. Venus' surface is so hot and hostile that no surface probe has lasted more than a

If you could look at Venus with radar eyes - this is what you might see. This computer reconstruction of the surface of Venus was created from data from the Magellan spacecraft. Magellan orbited Venus and used radar to map our neighboring planet's surface between 1990 and 1994. Magellan found many

A radar-generated image of Venus's surface, revealing a landscape of large, circular volcanic domes, approximately 25 kilometers across. The image, a product of data from NASA's Magellan mission (1990-1994), depicts the planet's fiery, textured surface, a testament to intense volcanism. The intense heat prevents long-duration surface exploration.

Astronomy Picture from 03/06/1997

Venus' Once Molten Surface
Credit:

Source: https://apod.nasa.gov/apod/ap970603.html


#VenusSurface #MagellanMission #PlanetaryScience #SpaceExploration #RadarImaging #VolcanicDomes #InfernalLandscape #HotPlanet #Venus #Cosmology

atmosphere. The THEMIS image data was recorded as a test of the camera system from an altitude of about 22,000 kilometers .