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May 3, 2021 9 tweets 6 min read Read on X
#AskAnAstronomer: Dr Siddharth Gandhi on Exoplanet Science, Life Beyond Earth and More - By @MrigDixit

weather.com/en-IN/india/sp… (📸: NASA Ames/JPL-Caltech/T...(Photo: ESO/M. Kornmesser/N...(Photo: NASA)(Photo: NASA/JPL-Caltech)
@MrigDixit Dr Siddharth Gandhi from the University of Warwick has carved out a name for himself at a young age. He has been conducting a significant amount of research to understand the atmospheres of exoplanets.

#astronomy
@MrigDixit In this exclusive interview, he talks about his latest research, which highlights the chemical fingerprint of an exoplanet named Osiris, and opens up about exoplanet science, life beyond Earth and more.

#astronomy
🌟 What are the most common ways to discover an exoplanet?

The two most common ways are watching the planet travel in front of its star causing a small dip in the stellar light (the transit method), and the radial velocity approach.

#astronomy Image
🌟 Why is it important to study an exoplanet?

Studying exoplanets tells us not only a great deal about how planets form and how abundant they are but also the uniqueness of the Earth and our own solar system.

#astronomy
🌟 What are the different kinds of stars that we look for in order to find Earth-like or potentially habitable planets?

To detect smaller rocky planets like ours, we have focused on cooler and smaller stars that are close to our Solar System.

#astronomy Image
🌟 What is the habitable zone around a star that astronomers keep referring to?

The Goldilocks or habitable zone is the region around a star where a planet can support liquid water on the surface.

#astronomy Image
🌟 With the advancement of technology, would it be possible to get a direct, real view of such planets?

Even with these large facilities images will still appear as a point source, and we will not be able to take a direct picture of their surface features as these planets. Image
🌟 What are the chances of an exoplanet being habitable for human beings and other Earthly species?

With billions of stars in the galaxy, there are many exoplanets out there for us to explore, but it's unknown right now how unique we are,we only have one Earth to compare as yet Image

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More from @weatherindia

Aug 17, 2022
While searching for life in the Gulf of Mexico, researchers pulled out a new bizarre-looking species of isopod, whose head resembles the Darth Vader from Star Wars!

Read: weather.com/en-IN/india/bi…

By: @anujav_97

📸: Dr Ming-Chih H/Journal of Natural History

🧵👇
This new-found crustacean, named Bathonymus yucatanensis, has 14 legs and is around 26 cm long — approximately 25 times larger than its closest relative, the common woodlouse.
While these blonde creatures seem pretty scary, the "Vanilla Vaders" are, in fact, harmless to humans.

Their huge size is only due to deep-sea gigantism — a phenomenon wherein ocean dwellers grow bigger than their terrestrial relatives due to lack of sunlight.

📸: SJADES 2018
Read 7 tweets
Aug 16, 2022
The Sun spewed out two consecutive coronal mass ejections on August 14-15, giving rise to a 'Cannibal CME'.

The scarier part? It's heading towards the Earth this week & could spark strong geomagnetic storms on Aug 18!

Read: weather.com/en-IN/india/sp…

By: @ashmitagupta_21

🧵👇
A cloud of dark plasma erupted on the solar surface on Aug 14, launching a #CME that could side sweep the Earth's magnetic field.

Then, on Aug 15, an exploding magnetic filament launched another CME right at its tail.
This could be a Cannibal CME event where the second CME might overtake and gobble up the first, creating a mish-mash of the two.

Cannibal CMEs contain tangled magnetic fields and compressed plasmas that can spark strong geomagnetic storms.

📽️: Animation by Walt Feimer/NASA
Read 7 tweets
Aug 6, 2022
Japan's #Subaru Strategic Program has discovered a super-Earth four times the mass of our planet orbiting a red dwarf just 37 lightyears away.

The good news? This #exoplanet, named Ross 508b, might be habitable!

Read: weather.com/en-IN/india/sp…

By: @ashmitagupta_21

🧵👇 Image
This super-Earth is a rocky world, on which a year is equal to just 11 Earth days.

The short orbit is down to the red dwarfs being a lot smaller than the Sun that centres our solar system. But the smaller sizes also make their gravitational fields less expansive than the Sun's. Image
Therefore, Ross 508b revolves around its red dwarf at a distance of just 5 million km. Mercury, in comparison, is about 60 million km from the Sun.

The short distance between this super-Earth & its red dwarf begs the question: how could it possibly be habitable? Image
Read 7 tweets
Jul 15, 2022
#Japan is making grand plans of creating interplanetary #trains and champagne flute-like glass habitats in its bid to send and host humans on the #Moon and #Mars!

Read: weather.com/en-IN/india/sp…

📸: Youtube SC/Kajima Corp.

Thread. 👇
An interplanetary transportation system dubbed the 'Hexatrack', which maintains a gravity of 1G during long-distance travel to mitigate the effects of prolonged exposure to low gravity, has been proposed by #Japanese researchers.
The #trains will also possess 'Hexacapsules', which are essentially hexagon-shaped capsules with a moving device in the middle.
Read 7 tweets
Jul 14, 2022
A new species of #dinosaur has just dropped and word on the street is that it’s pretty similar to the #TRex

In fact, researchers think this discovery could explain why these beasts evolved to have tiny arms!

Read: weather.com/en-IN/india/sc…

📸: Jorge A Gonzalez

Thread. 👇 Image
In 2012, the almost-complete skeleton of a new kind of #dinosaur was found in the northern Patagonia region of #Argentina.

The dinosaur has been christened #Meraxes gigas. The generic epithet is an ode to a dragon in the #GameOfThrones series.
Standing at the height of 11 m (36 ft) and weighing roughly 4000 kgs, the #dinosaur sported several crests, bumps and horns on its skull, which lent it a menacing appearance.

But the highlight of the findings is that the dinosaur had teeny-tiny arms, just like the #Trex! Image
Read 6 tweets
Jul 14, 2022
#NASA-led #JamesWebbSpaceTelescope's breathtaking images of the universe's past have taken the world by storm.

As we inch closer to unravelling more cosmic secrets, here's how researchers from #India plan to use the #JWST.

Read: weather.com/en-IN/india/sp…

Thread👇
#NASA had opened up submissions for Guaranteed Time Observations to reward scientists with 16% use of the JWST observatory for the first 3 cycles.

Out of the 1,173 proposals, two astronomers hail from India: Dr #JessyJose from @IiserTirupati & Dr #Puravankara from @TIFRScience.
Dr Jose, along with an international research team from the US, UK and Australia, will be examining the Galactic Centre Cloud (GCC) — the central molecular zone of our Milky Way — in April 2023.

They have been allotted 27.3 hours over the access period of 12 months.
Read 8 tweets

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