# Event Details

- **Event Name**: Astronomy Lecture -  Illuminating the “Emptiness” of Space with Radio Beacons
- **Event Start and End Date**: Fri, 26 Jun, 2026 at 08:00 pm
- **Event Description**: What fills the seemingly empty void between the stars? And how can mysterious cosmic beacons help us uncover the structure of the invisible universe? Join us for a lecture by postdoctoral fellow Stella Ocker as she discusses these topics and more.  Her presentation will be followed by a panel Q&A consisting of several astrophysicists to answer your questions about astronomy and space science. 

This public astronomy event will be hosted both in-person as well as live-streamed over YouTube Live. The lecture will be 30 minutes, followed by a 90-minute session of telescope-aided stargazing and a Q&A Panel consisting of experts in the department on a variety of astronomy and astrophysical topics. You can attend in person or interact with us through the YouTube interface. Event is free and open to all, no reservations necessary.

For more information including a link to the YouTube Livestream and directions to Caltech, click on the poster image or visit our webpage: http://outreach.astro.caltech.edu

Title:  Illuminating the “Emptiness” of Space with Radio Beacons
Lecturer: Stella Ocker
Abstract:
While stars are the most obvious naked-eye feature in the night sky, they actually constitute a tiny fraction of all the ordinary matter in the universe. Most of the visible matter in the cosmos takes the form of diffuse ionized gas, or “plasma,” distributed between stars and galaxies. In this talk I will discuss how pulsars and fast radio bursts are used as cosmic flashlights to illuminate the distribution of this plasma within our Milky Way and across cosmic time. I will share the exciting prospects for studying these cosmic radio sources with upcoming surveys led by Caltech, which will ultimately lead us to a deeper understanding of galaxy evolution and the universe itself.
- **Event URL**: https://allevents.in/pasadena/astronomy-lecture-illuminating-the-emptiness-of-space-with-radio-beacons/200030271463008
- **Event Categories**: virtual, science-fair
- **Interested Audience**: 
  - total_interested_count: 27

## Ticket Details


## Event venue details

- **city**: Pasadena
- **state**: CA
- **country**: United States
- **location**: 1216 E California Blvd, Pasadena, CA, United States, California 91125
- **lat**: 34.13579
- **long**: -118.12547
- **full address**: 1216 E California Blvd, Pasadena, CA, United States, California 91125

## Event gallery

- **Alt text**: Astronomy Lecture -  Illuminating the “Emptiness” of Space with Radio Beacons
  - **Image URL**: https://cdn-az.allevents.in/events2/banners/517310b181f6c904c4bdb1ec67a96aab32ce12a6ecb2cfcc93758f7062825375-rimg-w1200-h675-dc070f1c-gmir?v=1781903588

## FAQs

- **Q**: When and where is Astronomy Lecture -  Illuminating the  Emptiness  of Space with Radio Beacons being held?
  - **A:** Astronomy Lecture -  Illuminating the  Emptiness  of Space with Radio Beacons takes place on Fri, 26 Jun, 2026 at 08:00 pm to Fri, 26 Jun, 2026 at 08:00 pm at 1216 E California Blvd, Pasadena, CA, United States, California 91125.
- **Q**: Who is organizing Astronomy Lecture -  Illuminating the  Emptiness  of Space with Radio Beacons?
  - **A:** Astronomy Lecture -  Illuminating the  Emptiness  of Space with Radio Beacons is organized by Caltech Astronomy.

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