What’s on : Cafe-scientifique

Fantastic Planets and How to Find them

Cafe-scientifique
Date
7 Feb 2018
Start time
7:30 PM
Venue
City Screen Basement Bar
Speaker
Dr Emily Brunsden, University of York
This artist's concept allows us to imagine what it would be like to stand on the surface of the exoplanet TRAPPIST-1f, located in the TRAPPIST-1 system in the constellation Aquarius. 

Because this planet is thought to be tidally locked to its star, meaning the same face of the planet is always pointed at the star, there would be a region called the terminator that perpetually divides day and night. If the night side is icy, the day side might give way to liquid water in the area where sufficient starlight hits the surface. 

One of the unusual features of TRAPPIST-1 planets is how close they are to each other -- so close that other planets could be visible in the sky from the surface of each one. In this view, the planets in the sky correspond to TRAPPIST1e (top left crescent), d (middle crescent) and c (bright dot to the lower right of the crescents). TRAPPIST-1e would appear about the same size as the moon and TRAPPIST1-c is on the far side of the star. The star itself, an ultra-cool dwarf, would appear about three times larger than our own sun does in Earth's skies.

The TRAPPIST-1 system has been revealed through observations from NASA's Spitzer Space Telescope and the ground-based TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) telescope, as well as other ground-based observatories. The system was named for the TRAPPIST telescope.

NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech in Pasadena. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.

Event Information

Fantastic planets and how to find them

Dr Emily Brunsden, University of York

Imagine living in a world with three Suns, red jungles or endless night. These ideas have moved from fiction to reality as we discover more and more fantastic planets in our galaxy. This talk explains how we find such amazing worlds and how we know what they might be like.

Image credit: NASA/JPL-Caltech/T. Pyle (IPAC)

Wednesday 7th February in City Screen Basement
Doors open 7pm for 7.30pm presentation

Tickets are free and can be pre-booked by phone or on-line with City Screen (0871 902 5726).

Alternatively tickets are available on the night of the event at the City Screen Ticket Desk.

Please note there is no Cafe Scientifique in January