by Hugh Osborn
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In November 2025, I was awarded a 5-year SNSF Starting Grant to lead a large project on understanding Neptune-like planets. Here is a brief summary of that project and what will be involved. Thanks to surveys like Kepler, we now know that most stars like the Sun host a place between the size of Earth Continue reading The Exo-Neptune Census
We have a big press release today on the discovery of the HD110067 system, involving more than a dozen institutions across the US and Europe. That focuses on the science and the broader picture of these new planets. But I thought I would share a more personal viewpoint of the idiosyncratic (and somewhat unique way) Continue reading Finding six synchronised sub-Neptunes orbiting HD110067
From the dawn of modern astronomy (1710): From the dawn of the Exoplanet age (1995):
Today we announce four new planetary systems which were discovered via a combination of TESS and CHEOPS photometry through a project I started on the CHEOPS GTO (see our ESA and Swiss press releases). The problem with TESS TESS is surveying the whole sky to find new transiting planets around bright stars, and it has Continue reading Four new planetary systems from TESS CHEOPS
It’s not always obvious exactly how to proceed, so here’s a quick guide. 1) Fix compilation problems on overleaf Even though overleaf might still be able to compile a pdf with a few orange/red warnings, arxiv definitely will not. So click on “logs and output files” and go through the bugs warnings one-by-one fixing Continue reading Uploading an overleaf paper to arXiv
One of my day-to-day jobs as an exoplanet astronomer is to look through transiting exoplanet candidates and find those that are actually from exoplanets. However, scrolling through Kepler, K2 or TESS lightcurves is something anyone can do – professionals and amateurs alike. Therefore, it may be useful for me to go through a few of Continue reading So you think you ve found an exoplanet
Occasionally I have wondered which exoplanets are most loved by astronomers. One way to find the answer is to pit planets against each another and see which one survives… something my podcast exocast does every year in the #ExoCup! But another way to answer this question is to look at the trends in the published Continue reading Astronomers Favourite Exoplanet
Move aside Tabby’s star – a new enigmatic star observed by K2 looks to have taken the title of the “most mysterious star in the galaxy” – HD 139139. Here I’ll try to explain why it’s just so weird. The Basics First, a few basics – we use satellites like NASA’s Kepler mission to find Continue reading Why the Random Transiter is now the most mysterious star in the Galaxy
My most-cited work is probably not a peer-reviewed paper (to my shame), but a simple gif I made a few years ago. I was asked by to update it recently, and I gladly took the chance to run it forward to the present day. So here are the direct links to a few versions updated Continue reading From Planets to Exoplanets An Updated Animation
The Transiting Exoplanet Survey Satellite is a rather impressive mission! Only approved in 2013, in just 5 years the team from MIT have built an astounding little satellite. I won’t talk about it’s funky lunar-resonant orbit, about its internal hardware, or even about it’s launch on a Space X Falcon 9. Instead I’m going to Continue reading What TESS will do for Exoplanets
