Mari

Saudades demais!! Sem data ainda :/

Hahaha, you’re already pulling/inspiring all of us every day with your work!! So you're excused. 🤣

@livbrandao.bsky.social circa 2003

Even though this is super clever, it only works for the stars that are relatively nearby us. More clever ways of measuring those pesky far away stars coming in future posts.

Cool piece of info we take for granted.
Luminosity of the stars is how much light energy they emit into space per second - is comparable to or greater than that of the sun.
Source: Book - Universe by Geller, Robert M

#astrophysics #astronomy #stars

Source of Info - Book Universe by Geller, Robert M - Chapter 17 - The Nature of Stars.

#astrophysics #astronomy #science

Parallax - This is how the smart pants Astronomers figure it out how to measure the distances to the stars. You look at the star from two different positions like opposite sides of Earth’s orbit and see how much it “moves” against distant stars. The bigger the shift the closer the star is. #astro

First day of school of the semester. Exploring Stars and The Milky Way here we go!
Let the Galactic Structure Astrophysics good times roll!!!
#astrophysics #astronomy #science #stars

A figure from the paper (Figure 4). It shows the locations of known hypervelocity stars as black circles, with the predicted overdensity that the LMC would cause shown in red. Full caption: Predicted on-sky overdensity of hypervelocity stars originating from a 6 × 105M⊙ supermassive black hole in the LMC. The black open circles denote the Galactic coordinates of hypervelocity stars detected in the HVS Survey, while the grey-shaded regions mark areas excluded from the survey. The current position of the LMC is illustrated with a representative image, and its orbital trajectory is drawn with a red arrow. The forward model incorporating an SMBH in the LMC along with the selection effects of the HVS Survey predicts a prominent overdensity of HVS in the region enclosed by the red contours. The overdensity arises because stars are boosted in the direction of the LMC’s orbit. This model accurately reproduces the observed overdensity location, supporting the hypothesis of an SMBH in the LMC as a source of these stars.

A very fascinating paper went up on the arXiv today!

Jesse Han & El-Badry et al. reanalysed the 21 known 'hypervelocity' stars in the #milkyway.

They find strong evidence that the LMC (Large Milky/Magellanic Cloud) has a supermassive black hole at its core! 🤯 arxiv.org/abs/2502.00102

Sunset on Mars as seen by rover Curiosity.

Credit: NASA​/​JPL-Caltech​/​MSSS​/​TAMU

Agnes Giberne on asteroids:

'Are they worlds? Why not? Is not a drop of water, shown in the microscope, peopled with a multitude of various beings? Does not a stone in a meadow hide a world of swarming insects?'

- The Story of the Sun, Moon and Stars, 1898 🧪 #PlanetSci

The Hubble Space Telescope captured this stunning image of Eta Carinae, a massive star system known for its dramatic outbursts. The nebula surrounding the star is a complex tapestry of gas and dust, glowing in shades of blue and red. The bright blue regions indicate hot, ionized gas, while the red areas show cooler gas. The intricate patterns and filaments in the nebula are the result of powerful stellar winds and radiation from Eta Carinae.

Hubble image of Eta Carinae, the remains of the collapse of a giant molecular cloud.
Processed by @Tho_Carp
www.flickr.com/photos/19746...
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Just breathe a little…
#nature #scape #forest #mood #australia #thredbo #snowymountains

The image from Webb’s NIRCam (Near-Infrared Camera) combines infrared light at wavelengths of 0.9 microns (represented in blue), 1.5 microns (green), and 2.77 microns (red). The stars in Leo P appear blue in comparison to the background galaxies for several reasons. Young, massive stars that are common in star-forming galaxies are predominantly blue. Leo P also is extremely lacking in elements heavier than hydrogen and helium, and the resulting “metal-poor” stars tend to be bluer than Sun-like stars. A bubble-like structure at bottom center is a region of ionized hydrogen surrounding a hot, massive O-type star.

Leo P.
This is a star-forming dwarf galaxy, located about 5 million light years away from us (blue stars on the bottom-right side of the image).
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💔

I know 😞. So sad, guy was a legendary human.

The James Webb Space Telescope's Near-Infrared Camera (NIRCam) has unveiled the majestic spiral galaxy NGC 2997 in exquisite detail. The image showcases the galaxy's grand design, with prominent spiral arms winding outwards from a luminous central core. The arms are studded with clusters of young, hot stars, while the core harbors a supermassive black hole. The image also reveals a delicate dusting of interstellar dust lanes, tracing the galaxy's intricate structure.

NGC 2997 by JWST.
Processed by Алексей Кудря (@Alex_A_Lex on X).
🔭 🧪

This is a real community.

This 🫶
“Small moves Ellie, small moves…”

#astronomy #jwst #astrophysics

The James Webb Space Telescope's NIRCam captures a stunning view of Westerlund 1. Thousands of stars shine brightly, their light diffracted into colorful cross patterns due to the telescope's optics. Interstellar dust and gas glow in shades of red and orange, forming intricate nebulae.

Open star cluster Westerlund 1. A home to a variety of young, massive stars.
This image was presented today on AAS Nova.
aasnova.org/2025/01/14/a...
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An image made of three panels. The largest on the left shows the NIRCam image of a nebula with two bright stars. A skewed box in the top-right points to a second panel on the right, with a MIRI image of that area. A tiny box in the centre of that panel is blown up in a third panel below, with a zoomed-in, combined MIRI and NIRCam image of a yellow and orange blob.

The insane resolution of JWST.
This is a protoplanetary disc surrounding a young star, that lies about 1350 light-years from Earth.
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This is insane!! #jwst #astronomy #astrophysics

SKOL!!

Nah, you’re just used to think. Even though it can be a great tool, I reckon using our inquisitive minds and brains to figure something out still has an inherently sense of accomplishment that our subconscious craves.

Great Mission. But also very proud of the work with did in Brazil prior GAIA using our ground based telescope at Pico Dos Dias, for a massive survey of OC, and GC. Years later comparing our data with GAIA and see the numbers as close as they are, what a feeling.

An image made of three panels. The largest on the left shows the NIRCam image of a nebula with two bright stars. A skewed box in the top-right points to a second panel on the right, with a MIRI image of that area. A tiny box in the centre of that panel is blown up in a third panel below, with a zoomed-in, combined MIRI and NIRCam image of a yellow and orange blob.

The Orion Bar region by JWST.
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Antonin Prandtl: *invents the centrifuge*

Colleague (eating a wet salad): I have an idea

A visualization showing the size difference between the Moon (far left), the Earth (center), and Jupiter (far right).

a great visualization of the true size difference between jupiter, the earth, and the moon!

In space tonight: mini TED talk