News about PaperPanda, Open Access, and Research
When the immense sound of the Ariane 5 rocket rumbles across Europe’s spaceport in French Guiana, it will signal the end of a journey decades in the making. Perched atop the rocket will be the James Webb Space Telescope (JWST), the most sophisticated and complex observatory ever constructed. An enormous mirror 6.5 meters across, … Read more
From Earth’s vantage point in one of the Milky Way’s spiral arms, the structure of our galaxy is pretty difficult to reconstruct. That’s because gauging the distance to something in space when you don’t know its intrinsic brightness is really, really hard. And there are a lot of objects in the Milky Way whose brightness … Read more
The Universe is too heavy. According to our measurements of the normal matter in the Universe, there’s not nearly enough of it to account for the strength of the gravitational effects we can see. Whatever is making up the rest of the mass is nothing we can detect directly, and the quest to figure … Read more
In the search for “potentially-habitable” extrasolar planets, one of the main things scientists look at is stellar activity. Whereas stars like our own, a G-type (G2V) yellow dwarf, are considered stable over time, other classes are variable and prone to flare-ups – particularly M-type red dwarf stars. Even if a star has multiple planets … Read more
By Leah Crane An illustration of NASA’s Parker Solar Probe NASA’s Goddard Space Flight Center/Joy Ng NASA’s Parker Solar Probe has reached out to our star and touched its atmosphere. On 28 April, it became the first spacecraft to enter the upper atmosphere of the sun, called the corona. This milestone was announced on 14 … Read more
In the heart of the Milky Way, stars tread a complex measure. Bound by the gravitational field of the supermassive black hole in the galactic center, Sagittarius A*, a group of stars known as S-stars swoop on wild, years-long orbits. These orbits were recently studied to measure Sgr A*, a result that won the scientists … Read more
Astronomers have observed Sagittarius A* – the supermassive black hole at the centre of our galaxy – closer than ever before, and Albert Einstein’s general theory of relativity still holds up Space 14 December 2021 By Leah Crane Stars orbiting very close to Sagittarius A* (centre), the supermassive black hole at the heart of the … Read more
A mysterious cloud that somehow survived a close encounter with a supermassive black hole has now been unmasked. According to a new study of the object, called G2, it’s actually three baby stars, shrouded in a thick cloud of the gas and dust from which they were born. This interpretation offers a very tidy solution … Read more
Two pulsars locked in close binary orbit have once again validated predictions made by Einstein’s theory of general relativity. Over 16 years, an international team of astronomers has observed the pulsar pair, named PSR J0737−3039A/B, finding that the relativistic effects can be measured in the timing of their pulses – just as predicted and expected. … Read more
By Gege Li Photograph Hubble Space Telescope These two spectacular images are some of the most recent shots of our solar system snapped by the Hubble Space Telescope. Its goals include investigating celestial bodies, such as planets and stars, and probing how our universe is evolving. Nasa, Esa, And J. Tan (Chalmers University Of Technology) … Read more