pomarede, 2 months ago to space

Ingenuity at Valinor Hills

image acquired by Perseverance on April 4, 2024 (Sol 1110).
Credit: NASA/JPL-Caltech/ASU

#ingenuity #perseverance #ValinorHills #mars #nasa #jpl #caltech #space #astron #rover #photography

pomarede, 2 months ago to Cosmology

Cool video of baryon acoustic oscillations in 3D and how they act as a cosmic ruler for measuring dark energy, just released by Berkeley Lab

https://youtu.be/hoOyOAAj4iY?si=vfnScOcjNGgCHQ9P

#cosmology #universe #darkenergy #BAO #baryon #acoustic #oscillations #galaxies #video #3D #youtube #Berkeley #BerkeleyNationalLab #astronomy #astrophysics #astron #science #research #STEM #space

pomarede, 2 months ago to Cosmology

in the #arXiv

SN H0pe: The First Measurement of H0 from a Multiply-Imaged Type Ia Supernova, Discovered by JWST

by Massimo Pascale and co-authors
https://arxiv.org/abs/2403.18902

Their result agrees with other local universe measurements, increasing evidence of the Hubble tension.

#HubbleTension #Cosmology #HubbleConstant #SNH0pe #supernova #astronomy #astrophysics #astron #science #research #STEM #news #JWST

hembrow, 7 months ago to Netherlands

The centre of the largest telescope in the world* is conveniently situated within cycling distance so on Sunday's open day a group of us cycled there.

You can read more about it here:
https://en.wikipedia.org/wiki/Low-Frequency_Array_(LOFAR)

https://www.astron.nl/telescopes/lofar/

• It's described as "the largest radiotelescope in the world which can operate at the lowest frequencies that can be observed from earth" and it's about a thousand km wide, which makes it a nice example of peaceful international scientific cooperation.

#lofar #radiotelescope #velomobile #ligfiets #recumbent #netherlands #astron #superterp #regel17

Our velomobiles parked next to the cycle-parking
People crowding around to hear an explanation of how the telescope works. There were a lot of activities going on. This isn't the whole crowd.
One of the low frequency (10-80 MHz) antennas. The high frequency (120-240 MHz) antennas are much smaller and grouped together under the black plastic box on the left of the photo.