Vincent Ledvina Profile picture
Jun 29 1 tweets 3 min read Read on X
Hello, everyone! Thanks for the supportive comments on my post last week about the President's budget request and proposed cancelation of the NSF GRFP program which is funding my Ph.D. studies. All of this is really unnerving and sad. I worked hard to win a competitive NSF graduate research fellowship, and the current administration is now working to take money away from me and many other students.

The field of Heliophysics will face irreversible damage if the budget passees surely affecting many aurora chasing data streams and models we all use. Also, the fundamental science that drives operational space weather tools will be near-impossible to do effectively if the PBR moves forward.

These are just facts and have nothing to do with my views. I am simply stating what will happen if the proposed budget moves forward.

I am attending a webinar tomorrow about the current situation and will provide more details about the timeline for all this to happen, but I DO know that things are still very much in flux, and we may not get any final decision until the end of the year.

In the meantime, I have been working to compile some points on advocacy. Right now, what is most effective is calling your representatives, and the time to call is NOW while the the 2026 Congressional Budget Bill is being put together in the House. An initial budget bill could come out as early as next week. It means a lot for members of the "general" public (You) to speak out against this. Calling your representatives is the most effective way to voice your opinion.

Note that you DO NOT need to be a U.S. citizen to advocate; your representative/senator represents all those who live in their district/state, regardless of their citizenship.

How to find your Representative: house.gov/representative…

How to find your Senator: senate.gov/senators/senat…

Attached to this post are two scripts for calling congress about supporting Heliophysics, NASA, and NSF.

📌 One is longer with more details -- to use if a human picks up the phone on the other end.

📌 One is shorter and to the point -- to use if you get voicemail on the other end.

Thanks!Image
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More from @Vincent_Ledvina

Aug 31
A solar storm is on the way and may cause a moderate or even strong geomagnetic storm on Monday or Tuesday. Impact is predicted for around 20 UT on September 1, and auroras may be seen further equatorward than usual on Monday and Tuesday night. Here's what you need to know... Image
Before we begin, a quick plug for my e-mail list where I sent out all this information earlier. I put a lot of work into crafting these alert messages, and they explain everything at a beginner level. You can sign up here to get these emails: go.theauroraguy.com/alerts
First, let me explain what is happening. An M2.7 flare from a magnetically-active region called "AR 4199" launched a coronal mass ejection (CME) that is heading towards Earth. It is forecasted to arrive around Sep 1 at 20 UT according to official modeling by NOAA SWPC. Image
Read 30 tweets
Aug 30
Now that aurora season is in full swing, it's important to have some good kit to capture the moment when that substorm hits. Let's talk about aurora photography gear and my recommendations for cameras and lenses at a variety of budgets. 🌌📷🧵 Image
Before I go into specific models, let's talk about why you may or may not need to upgrade.

You probably have a phone that can take aurora pictures. While they can capture more than your eyes can see, it's impossible to print anything larger than a 4x5 and have it look good... Image
A professional photography kit (camera+lens) doesn't have to break the bank, though! In general, you want to look for two things:

1. A camera model with a manual mode.
2. A wide-angle lens with a large aperture.

In general, a good lens matters more than your camera. Image
Read 26 tweets
May 31
G4 (Kp 8)/SEVERE Geomagnetic Storming is POSSIBLE tomorrow as a large CME is expected to hit Earth on June 1 around midday UT (morning North America). What is going on? Who will see aurora and when? How can you track this anticipated event? Read on! Image
Right now, there are some sunspot groups on the Sun facing the Earth. Specifically, AR (active region) 4100 and 4099 are directly facing Earth and magnetically complex, harboring potential for solar flares and CME eruptions... Image
Around midnight UT on May 31, an M8.2 solar flare occured from AR 4100, launching a shockwave through the solar atmosphere and CME out into space. Due to the position of the active region, this CME is heading directly at Earth. Image
Read 34 tweets
Apr 14
Heads up aurora chasers! Tomorrow, we could see aurora down to mid-latitudes including the U.S.-Canada border, central Europe, New Zealand, and Tasmania. G2/Kp 6 conditions are currently anticipated. Let's break down why this happening, and who will see aurora at what times! 🧵 Image
First off, if you want to get these kind of threads emailed to you, you can sign up for my e-mail list: .

I send out these aurora alerts in anticipation of enhanced geomagnetic activity, and I try to give people a few days in advance to plan things out.go.theauroraguy.com/email
Okay, let's dive in!

First off, what is causing this forecasted period of enhanced geomagnetic activity? Well, yesterday morning UT time, we saw a nice filament eruption on the Sun. Filaments are like unstable plasma slinkies that can spontaneously lift off the Sun into space.
Read 30 tweets
Mar 24
A very large coronal hole is now directly facing Earth. We may see a CIR/density compression followed by HSS (high speed stream) in the next 24-48 hours. These high-speed streams can trigger geomagnetic storms, usually of minor to moderate strength (Kp 5-6). Image
Here's a screenshot from my e-book "A Beginner's Guide to Aurora Chasing" which can be found for free using this link: .

It shows the characteristic solar wind pattern associated with the arrival of these high-speed streams. go.theauroraguy.com/ebookImage
In fact, NOAA SWPC has issued a G2 moderate geomagnetic storm watch for tomorrow. The exact timing of the arrival of the high-speed stream is looser than a CME - conditions usually change over the course of hours instead of during a CME where this is a shock at a moment in time. Image
Read 10 tweets
Feb 11
What makes the aurora “explode?” In my most recent blog post, I go over a CRUCIAL concept in aurora chasing and space physics: Substorms! Learn more and read my blog: and in the thread below! 🧵theauroraguy.com/blogs/blog/wha…
Picture this… You’re out chasing the aurora in Fairbanks, Alaska watching a thin, faint arc stretching across the sky. Suddenly, this arc erupts and starts swirling and growing rapidly. Now, the aurora fills the sky with bright colors and active motion. Image
The intensity of the aurora is so bright you start seeing colors – greens and a thin fringe of purple on the bottom of the auroral arcs.
Read 81 tweets

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