Nu Scorpii

L1527 IRS - Protostar

Stars form when bodies of dust and gas create enough mass to create a gravitational effect that's able to then pull in more gas, the process continues and the mass increases until the pressure at the centre is sufficient for fusion to begin.

There's many examples of protostars, in fact back in 2012,  NASA’s Spitzer Space Telescope focused in on L1527 IRS, believed at the time to be the youngest forming star ever found.

Recently, the JWST re-visited this protostar, and the title image was the result.

The forming star cannot be visually spotted, but is thought to be around 20-40% the mass of our own Sun already.

If you look closely, you can see there's a dark patch in the centre, this is actually the accretion disk around the newly formed star, what is left over after the formation, may go on to form the planets, in fact, they may be actually starting to be created already, as recent evidence does point to planets being born around the same time as the star does in many cases.

The protostar is only 450 light years from Earth in the Constellation of Taurus, and is thought to be around 100,000 years old, a blink of an eye in the life of a star, particularly of this mass.

Astronomical photographs, Harvard College Observatory, Cambridge, 1890-1920

NASA's monster garage, 1980.

IC 4628: The Prawn Nebula ©

M42, Great Orion

(by Evan Leith)

Andromeda, If It Was Brighter

One of the largest structures in the night sky is visible with the naked eye, but if you live in a city, it's literally hiding just out of sight. Even in a dark area, it's not the easiest to immediately see, but the above image has brightened it up for us, to show us what the galaxy would look like, if only the sky was dark enough and the galaxy was a bit brighter.

The moon comparison is the best one, that is something we can all see in the night sky (unless you live in the UK, where you see mostly clouds).

Now imagine that galaxy stretching several moon-spans across the sky. That I hope gives you a minor taste of what it's like when using a small telescope or even binoculars, you first come across it.

If you live in the Northern Hemisphere, then it's well worth the search.

Near sunset, look for 3 objects which should be easy to locate, Venus and Jupiter (I'll come to this in a moment) low in the sky, the W of Cassiopeia and the Seven Sisters (Pleiades), and from that, you should find the location. Bare in mind it's several times the size of the moon, so you don't have to be too accurate, but if you can find the stars of Andromeda, that will help refine your search.

And finally that brings me on to the real star of the sky currently, Jupiter and Venus, the two brightest planets, very close together.

In fact, if you do have a really good pair of binoculars, or small telescope, this is a great time to view them. Venus often appears as a crescent like a phase of the moon, and Jupiter has it's 4 Galilean moons to spot.

Happy Spotting !

Boo! Did we get you? 🎃

This solar jack-o-lantern, captured by our Solar Dynamics Observatory (SDO) in October 2014, gets its ghoulish grin from active regions on the Sun, which emit more light and energy than the surrounding dark areas. Active regions are markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere.

The SDO has kept an unblinking eye on the Sun since 2010, recording phenomena like solar flares and coronal loops. It measures the Sun’s interior, atmosphere, magnetic field, and energy output, helping us understand our nearest star.

Grab the high-resolution version here.

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Messier 45: The Pleiades

Nick Fritz on Instagram

2023 February 25

Crescent Moon Occultation Image Credit & Copyright: Fefo Bouvier

Explanation: On February 22, a young Moon shared the western sky at sunset with bright planets Venus and Jupiter along the ecliptic plane. The beautiful celestial conjunction was visible around planet Earth. But from some locations Jupiter hid for a while, occulted by the crescent lunar disk. The Solar System’s ruling gas giant was captured here just before it disappeared behind the the Moon’s dark edge, seen over the Río de la Plata at Colonia del Sacramento, Uruguay. In the serene river and skyscape Venus is not so shy, shining brightly closer to the horizon through the fading twilight. Next week Venus and Jupiter will appear even closer in your evening sky.

∞ Source: apod.nasa.gov/apod/ap230225.html