TESS tagged posts

Not just for finding planets: Exoplanet-hunter TESS telescope spots bright Gamma-ray Burst

Credits: NASA, ESA and M. Kornmesser

NASA has a long tradition of unexpected discoveries, and the space program’s TESS mission is no different. SMU astrophysicist and her team have discovered a particularly bright gamma-ray burst using a NASA telescope designed to find exoplanets — those occurring outside our solar system — particularly those that might be able to support life.

It’s the first time a gamma-ray burst has been found this way.

Gamma-ray bursts are the brightest explosions in the universe, typically associated with the collapse of a massive star and the birth of a black hole. They can produce as much radioactive energy as the sun will release during its entire 10-billion-year existence.

Krista Lynne Smith, an assistant professor of physics at Southern Methodist Uni...

Read More

Earth has a Hot New Neighbor – and it’s an Astronomer’s Dream

Artist's impression of the rocky terrain and lava rivers on the surface of Gliese 486b
It’s getting hot in here … 430 degrees Celsius hot, that is. Artist’s interpretation: RenderArea

A rocky planet discovered in the Virgo constellation could change how we look for life in the universe. It could be our best chance yet of studying rocky planet atmospheres outside the solar system, a new international study involving UNSW Sydney shows.

The planet, called Gliese 486b (pronounced Glee-seh), is a ‘super-Earth’: that is, a rocky planet bigger than Earth but smaller than ice giants like Neptune and Uranus. It orbits a red dwarf star around 26 light-years away, making it a close neighbour — galactically speaking.

With a piping-hot surface temperature of 430 degrees Celsius, Gliese 486b is too hot to support human life...

Read More

TESS discovers New Worlds in a River of Young Stars

This illustration sketches out the main features of TOI 451, a triple-planet system located 400 light-years away in the constellation Eridanus.
Credit: NASA’s Goddard Space Flight Center

Using observations from NASA’s Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a trio of hot worlds larger than Earth orbiting a much younger version of our Sun called TOI 451. The system resides in the recently discovered Pisces-Eridanus stream, a collection of stars less than 3% the age of our solar system that stretches across one-third of the sky.

The planets were discovered in TESS images taken between October and December 2018...

Read More

New Planets found in Unique System with CHEOPS

CHEOPS
CHEOPS_TOI-178 © ESA/CHEOPS Mission Consortium/A Leleu et al

A unique six-planet system, 200 light years away from Earth, has been observed around the star TOI-178 by an international research team including scientists from the University of St Andrews.

The observations were made using the CHEOPS (Characterising ExOPlanets Satellite) space telescope that was launched in December 2019 with the important goal of precisely measuring the size of known planets. However, as this work finds, the spacecraft has the exciting potential to discover new planets.

CHEOPS is a joint mission by the European Space Agency (ESA) and Switzerland, under the aegis of the University of Bern in collaboration with the University of Geneva and the University of St Andrews.

The team had believed there ...

Read More